HEART DISEASE AS A COMPENSABLE UNDER THE TEXAS WORKMEN'S BILL WEBER 222 INJURY COMPENSATION ACT HEART DISEASE AS A COMPENSABLE INJURY UNDER THE TEXAS WORKMEN'S COMPENSATION ACT Bill Weber Submitted to: Professor Eissinger December 8, 197 8 HEART DISEASE AS A COMPENSABLE INJURY UNDER THE TEXAS WORKMEN'S COMPENSATION ACT Compensation for employees who have sustained heart attacks has for many years been an area of great controversy. Prior to August, 1971 an employee inflicted with a disease not recognized and specifically set out in Section 20 of Article 8306 as an occupational disease was denied compensation, unless the injury could be classified as an accidental injury."'" Generally, this placed a heavy burden on the employee because accidental injuries were limited to "undesigned, untoward events traceable to a definite time and place involving a risk of the employment." Since diseases were recognized by the courts as being slow and gradual in development and untraceable by nature,"^ an inflicted employee was oftentimes placed in a paradoxical position of being denied compensation. Fre- quently, if his ailment failed to be one of the scheduled occupational diseases in Section 20, it also failed to satisfy the strict definition of accidental injuries since by its very nature as a disease, the instant of the disease inflicted injury could not be ascertained and hence was not "traceable" to a definite time and place involving a risk o 4 the employment. Since heart disease was not a compensable occupational disease under Section 20, the burden of satisfactorily proving heart failure to be an "accidental injury and showing a causal relationship between the affliction 24 2 and a risk of the claimant's employment, led to many inconsistent decisions by Texas courts^ ') In 1971, the Texas Legislature substantially amended Section 20 replacing the restrictive list of compensable occupational diseases with a comprehensive definition designed to broaden its scope and allow compensation for any genuine occupational disease.^ In its report to the Texas House of Representatives, the Committee on the Judiciary stated: The present system of listing occupational diseases for which compensation will be given is outdated and inflexible in an age when new and varied employment gives rise to many additional employee health hazards. It is felt that a better approach would be to make all diseases arising out of employment compensable . . . 6 Much debate has arisen over the interpretation and scope of the legislative reforms of Section 20 and other related sections of Article 8306. In order to understand the potential scope and limits of these reforms and its effect on the compensability of heart failure, it will be necessary to probe into the basis and rationale of these disputes by analyzing pertinent sections of Article S306 in light of court decisions primarily in Texas, but also in other jurisdictions. The purpose of this paper will also be to weigh the social policies and other considerations in broadening or limiting the compensability of heart disease in view of these legislative 262 reforms. The Development of Workman's Compensation Coverage From the time of its inception in Texas in 1913, Workman's Compensation has been a program designed to provide the employee with a broader range of compensable employment-related injuries while at the same time putting a ceiling on the amount of damages an injured employee could recover. While the statutes have undergone several legislative revisions through the years, the basic terminology and statutory definitions defining the scope and limits of compensation have remained. Compensation has been limited to "injuries" and "personal injuries" which have been defined as "damage or harm to the physical structure of the body and such diseases or infections as naturally result there7 from . . ."' Changes effecting the scope of compensation have come about through the imperfect evolution of courts' construction and application of these concepts. Originally, the statute was conceived to limit compensable injuries to those which resulted from a visible, violent, and accidental blow or exertion to the external portions of the body. In order to be accidental, the injury had to g be the result of an unexpected, unusual, or sudden event. Industrial- tvpe diseases were often by contrast entirely an internal injury resulting neither from a visible external wound nor 26 4 a violent physical exertion. A claimant inflicted with such a disease often found his injury noncompensable because it neither fit under the strict statutory limitations of a compensable disease nor did it satisfy the requirements of an 9 accidental injury. The claimant whose diseases clearly arose out of the employment, but which failed to fit within the strict confines of a compensable disease as defined, was denied any alternative common law remedy if the employer was a subscriber to Workman's Compensation."^ As deplorable and unequitable results became evident from such interpretations of the statutes, courts on a case by case basis began to broaden and extend the scope of' compensation.^ The concepts of "damage or harm" and "physical structure of the body" were no longer viewed as limited to 17 external or visible injuries of the body. " Eventually, in- juries, internal as well as external, which were simply sustained within the course of employment were construed as compensable accidental injuries so long as they were undesigned and not intentionally self-inflicted by the injured employee. Injuries were deemed accidental although they may have resulted from routine and daily tasks that were not at all unusual, sudden, or unexpected as long as there was evidence of exertion or strain 1 0 ; or a casual connection 14 between tne injury and the emplovment, could be established. The influence of these developments on cases involving heart failure was significant. Heart failure, like most other internal injuries had heretofore been compensable only when precipitated by either a blow or some violent exertion in the course of employment. Notwithstanding the advances made by the courts; to be compensable as an accidental injury, the injury which resulted in the disease has to be traceable to a definite time, place, and cause. However, an industrial disease often times resulted from a repetitive trauma or cumulative injury which individually was not injurious, but the cumulative effect of such exposure caused the disease. Under such circumstances, com- pensation continued to elude the claimant because the time, place, and cause of the disease producing injury was not susceptible of definite ascertainment."*"^ In 1947, an attempt was made to remedy this situation by providing compensation for industrial diseases which clearly arose out of the employment. The Legislature amended the statutes to include a specific list of compensable occupational X7 diseases. Diseases which naturally resulted from an "injury" remained compensable. The schedule list of occupational diseases were to be included within the definition of an "injury and personal injury." They were to be considered exceptions to the general scope of compensable injuries, which, barring 18 the revision would otherwise be non-compensable. ' Among the 19 diseases not i n d u c e d in this list was heart disease. The development of he art a ttacks as a compensable accidental injury is significant in understanding the effect the 1971 6 revisions may have on the compensability of heart attack as an occupational disease. Heart Attacks as Accidental Injuries and the Problem of Establishing a Causal Relationship As case law progressed, heart attacks became compensable as injuries when the event which inflicted the injury could be tied down to a definite time, place, and an identifiable cause. However, medical testimony pointing to a particular on the job event as the precipitating cause of the heart attack was often times deemed insufficient proof by the courts as satisfying claimant's burden of establishing a causal relationship. The courts recognized that a heart attack was usually the culminating result of a heart condition that has been deteriorating over an extended period of time and often caused by factors unrelated to the employment. 20 Since such factors were not a defense in a claim for compensation 21 as an accidental injury, the courts have required that the precipitating cause result from a risk or hazard of the employment. A large number of baffling and disparate opinions have followed as the courts have attempted to protect the employee's right to compensation and at the same time protect the employer from liability of injuries not job related. Injuries as "accidental" Unlike many states where compensation is provided only when there has been an "accidental injury" or an injury 7 22 which "results naturally and unavoidable from an accident," Texas Workmen's Compensation laws have never made an 23 "accident" a necessary prerequisite to compensation. How- ever, in seeking proof that an injury originated in the work, trade, or business, the courts have oftentimes required that the claimant's injury be the result of an accident or some unusual occurrence or unexpected event that could be traceable to the injury."^ This requirement has led to a particularly harsh burden on heart attack claimants because the claimant frequently had to show unusual strain or overexertion along with a causal connection between this job related strain or overexertion and the injury. In some cases if the job was normally strenuous, in order to be compensable, the accident or unusual occurrence has to 25 be exceptionally strenuous for the injury to be compensable. However, courts have varied in their interpretation of what elements constituting the precipitating cause of the heart attack are sufficient to deem the resulting injury a compensable accidental injury. One of the first Texas cases dealing with a claim based 26 on a heart attack was Southern Casualty Company v. Flores. The claimant's decedent had suffered a fatal heart attack while walking up a sharp incline while on the job. However, the claim was denied after it was discovered that the decedent had been suffering from an advanced case of syphillis and the slightest physical exertion would have been an 8 invitation to death. The court stated: This case belongs to that class in which the supposed injury comes from a hazard to which the workman would have been equally exposed apart from employment . . . The element of causative danger peculiar to the work is lacking. 27 The concept of an unusual strain or overexertion did not arise as an issue. However, the notion that the alleged injury must be the result of a causative danger "peculiar" to the job, added a further dimension to subsequent courts' analysis of the elements necessary to show an "accidental" injury stemming from an "unusual" occurrence. A case where the court denied compensation for that 28 reason was Gorman v. American General Insurance Company. The claimant's decedent, who had been employed as a janitor, had a fatal heart attack while walking on a gradual slope between two buildings. The court stated that there was no direct proof of overexertion or any strain that could be traceable to a definite time and place. The court reasoned that Gorman could have had the attack just as easily walking down the street. The fact that it happened at work did not establish a causal relationship between the injury and a risk of the employment. One authority insists that the basic difference between compensable and non-compensable injuries caused by heart attacks is that if the exertion causing the injury is "unusual" under the facts and circumstances, the injury should be 262 9 compensable. On the other hand, if there is no more than 29 ordinary exertion, it should not be compensable. While there are cases that have denied compensation based on this general proposition, it is evident from the disparate opinions in heart attack cases that such a standard is inadequate. To determine when an event should be deemed "unusual" and what degree of strain should be judged as "over" exertion under the facts and circumstances, places a great burden not only on the claimant, but also on the courts. Instead of defining and clarifying this standard, the courts in granting compensation have oftentimes broadened the standard to the point of obsolescence or have ignored it altogether. As will be shown below, the use of this standard as a means of defining "accidental" injuries has been diminished to merely one of many factors in determining if there is a definable injury traceable to a time and place within the scope of the claimant's employment. More recent cases have allowed compensation when there has been proof that the claimant sustained an injury through strain or exertion and there existed a causal relationship 30 between the injury and work-related activities. In Aetna Insurance Company v. Hart,"^ the court in surveying the development of case law in this area stated: We think the effect of the many decisions is that if an injury is shown to have been received by an employee while he is acting within the course of his employment . . . it is compensable under the Workmen's Compensation A c t . ^ 2 10 The first time the supreme court was faced with a heart attack-stroke case was in Carter v. Traveler's Insurance C o . p a n v C ^ The claimant's decedent was a hotel .aid whcse ~ job routinely required her to lift and carry heavy loads and move furniture. Compensation was granted because there was sufficient proof showing that the injury resulted from strain and overexertion. However, it should be noted that there was no proof of unusual strain or overexertion beyond which her job normally required. It was sufficient in establishing the causal relationship to show that the job was strenuous and the decedent was often exhausted. Cases which confronted or alluded to the issue of the necessity of finding the strain or overexertion to be "unusual" includes United States Fidelity and Guaranty Company v. Herzik.^ Here, the claimant's late husband has been employed as an oven loader at a local bakery. The court acknowledged testimony which described the work as not particularly strenuous. On the day of the heart attack there was no evidence of unusual strain. The insurance company argued in effect that under these circumstances, compensation should be denied. The court in rejecting the insurance company's argument gave an excellent example of a court broadening the concepts of "unusual" and "strain" to a point of making them inconsequential as a necessary standard in determining the right to compensation. The court stated: 262 11 Whatever the physical condition of the individual may be, if it is such that requires some physical exertion or strain to cause the rupture, the injury may properly be classed as an accidental one. If lifting 100 pounds may cause an accidental injury to one person, upon what ground can it be said that a similar injury to another person caused by lifting 50, pounds, or 25 pounds, is not also accidental? If that is not true, then where shall we draw the line between the differing physical condition or what shall we adopt as a standard of weight in determining whether the injury is the result of an accident or a disease? It would not be satisfactory or logical to fix the standard at what it would require to injure one in normal health, for even people in normal health vary in physical strength . . . since we cannot fix any standard of condition, neither can we fix any standard of sufficiency of cause operating upon the condition. The legal principle is the same, whether the injury results from lifting weights, as a can of paint, or by some other form of physical o v e r e x e r t i o n . 3 6 Two other cases that allowed compensation although there was no proof of unusual strain nor a causative danger peculiar to the work are Midwestern Insurance Company v. Wagner 37 and 38 Pan American Fire and Casualty Company v. Reed. cases involved truck drivers. Both In Wagner, the court found that the employee suffered a fatal heart attack as a result of strain or overexertion from climbing in and out of his employer's truck on a cold damp day during the early hours of the morning. The defendant-insurance company attempted to maintain the position that there was no evidence that Wagner suffered a heart attack as a result of strain or overexertion. The court held that "even mild exertion will quicken the heart beat and place a greater strain on the heart than exists while a person is not exerting himself and that the exertion in 262 12 evidence caused Wagner's death." 39 Obviously, Wagner could have experienced the same mild exertion climbing in and out of his personal truck on a cold damp morning. deceased was found dead lying by his truck. In Reed, the He had apparently been in the process of draining the pump on the. truck when he had his fatal heart attack. Here again there was no proof that the injury was a result of a causative danger or risk peculiar to the work, nor that draining the pump caused an 40 unusual strain which precipitated the heart attack. In finding a sufficient causal relationship between the injury caused by strain and the employment, the courts seemed to replace these latter two factors with a broader base for compensation as set out previously in Garcia v. Texas Indemnity Company.^ The risk may be no different in degree or kind than those to which he may be exposed outside of his employment. THE INJURY IS COMPENSABLE, NOT BECAUSE OF THE EXTENT OR PARTICULAR CHARACTER OF THE HAZARD BUT BECAUSE IT EXISTS AS ONE OF THE CONDITIONS OF EMPLOYMENT. 4 2 Notwithstanding this trend toward extending compensation for injuries caused by heart attacks, some of the same courts in subsequent decisions stubbornly denied compensation when the claimant failed to provide evidence that 1) the employee sustained a job-related injury and 2) the cause of the injury 43 was due to strain and overexertion. In O'Dell v. Home Indemnity C o m p a n y , ^ the deceased had been employed as an industrial oilfield mechanic. In denying compensation, the 235 13 court of civil appeals stated that merely showing the work was strenuous, standing alone, was insufficient. The court reasoned that since there was neither a showing that the deceased experienced strain or overexertion nor evidence of a causal connection between the strain or overexertion and the fatal heart attack, the claimant has failed to sustain their burden. Further there was no evidence that the heart attack was related to any unusual strain or that the deceased has performed any unusually strenuous work on that day.^ ^ While 0'Dell was not overruled, the effect of its decision has been largely neutralized by the supreme court 46 decision in Henderson v. Travelers Insurance Company. In this case, the claimant's decendent had been employed as an "air tugger" which was described as strenuous work. However, on the day of the fatal heart attack, no evidence was presented attempting to show a particular exertion or an unusual strain that acted as the precipitating cause of the injury. The court allowed compensation on what might have previously been considered meager evidence. The court held that there was evidence that "Henderson had worked a full shift doing a job that COULD often be strenuous in nature." ' However, Henderson was not out of step with the mainstream of earlier cases, but was merely an extension. In an earlier decision the supreme court in Baird v. Texas Employers' Insurance Association^ h a r e a f f i r m e d 262 a rule 14 established many years before in the Carter case when it recognized: . . . a heart attack caused by strain or overexertion is an accidental injury . . . and in the very nature of these cases, the evidence is most often largely circumstantial or based on answers by medical witnesses to hypothetical questions. 4 9 It is significant to note that the supreme court in both Baird and Henderson found that these injuries were compensable accidental injuries; although deemed compensable on the basis of CIRCUMSTANTIAL evidence. The effect of these decisions is to broaden rather than limit the scope of evidence that will satisfy the traditionally rigorous burden of showing an injurious event traceable to a definite time, place, and cause involving a risk of the employment. A year before the Baird decision, the supreme court in Olson v. Hartford Accident and Indemnity Company*^ denied compensation because the claimant failed to show that the alleged events resulting in the heart attack established an accidental injury. The court in Henderson distinguished the claim in Olson which was based on a heart attack caused by strain from mental stimuli, from the claim in its case which was based on a heart attack caused by strain from physical exertion. While the courts have recognized heart attacks caused by mental strain or psychic stimuli as compensable, the basis and extent of recovery for non-impact, emotional or 51 mental injury remains somewhat nebulous.' The development 15 of compensation for physical injuries or heart attacks caused by psychic reaction to prolonged or instantaneous stress and strain, and its effect on the scope of compensable heart attacks, will be discussed below. Psychic stimuli and accidental injuries It has long been the rule that damage to the physical structure of the body need not necessarily be externally visible to constitute a compensable injury. 52 In Hood v. 53 Texas Indemnity Insurance Company, a step further. the supreme court went In this case, the claimant sustained an injury to his left and right elbow and alleged that he developed, as a proximate result of such injuries, a disabling neurosis. The court found that although the neurosis was mental in origin, it was compensable as a 54 disease that resulted from a physical injury. However, the case was generally perceived to be limited to such mentally induced injuries resulting from physical injuries. Traumatic neurosis, standing alone, was not considered compensation"^ until the supreme court case of Bailey v. American General Insurance Company. The court held that injuries to the nervous system should be included within the meaning of "injury" as defined in Article 8306, Section 20, even in the absence of other physical injuries; and as a result constitute compensable damage or harm to the "physical structure of the body." The method and rationale of the 262 16 court in reaching this result has had far reaching implica- tions in litigation involving heart attacks caused primarily by psychic stimuli. For this reason, the case will be discussed at length. The claimant in the Bailey case had been employed as a structural steel worker. On the day of the accident, he and another employee were working at opposite ends of a movable scaffold suspended from the roof of a building. One end of the scaffold gave way and the co-worker plunged to his death. Bailey managed to grab one of the cables and swing to the roof of another building. He suffered only minoT injuries but the traumatic effect of the accident resulted in a disabling neurosis which rendered it impossible for him to return to that field of employment. In finding that such injuries caused by psychic or mental strain or stress should be included within the meaning of injury as defined in Section 20 the court said: The phrase 'physical structure of the body,' as it is used in the statute, must refer to the entire body, not simply to the skeletal structure or to the circulatory system or to the digestive system. It refers to the whole, to the complex of perfectly integrated and interdependent bones, tissues, and organs which function together by means of electrical, chemical and mechanical processes in a living, breathing, functioning individual. To determine what is meant by 'physical structure of the body' the structure should be considered that of a living person--not as a static, inaminate thing.5/ The court went on to make a distinction between damage and harm: 262 17 We cannot assume that either the word 'damage' or 'harm' is extraneous. Some difference must have been intended . . . Damage embraces direct physical injury to a cell, tissue, organ or organ system; 'harm' to the physical structure of the body embraces also impairment of use or control of physical structures directly caused by the accident . . . 'Harm' with reference to a living active structure--as a body is--in fact means essentially that the structure no longer functions as it should.58 Bailey set up the basic framework in which claims for psychic induced injuries have been litigated. jected any mind-body dichotomy. In summary Bailey re- It proposed that "physical structure of the body" must refer to the entire body, not only as an anatomical structure, but also as a complete functioning unit. If this anatomical structure failed to function as it should then that impairment of use or control of the structure should be considered harm, if the harm resulted from a psychic reaction to an untoward undesigned event involving a risk of the employment. The court in Bailey stated is should be as readily compensable as any similar physically induced injury. One of the first Texas cases dealing with a psychic 59 induced heart attack was Aetna Insurance Company v. Hart. The appellate court affirmed the trial court's holding granting compensation. The injury resulted solely from an emotional stimulus produced by an incident with a customer. The claimant, who had worked at a laundry cleaners, recognized this particular customer as he approached the door as the one who had previously been very rude and abrasive. 262 The man 18 lived up to his reputation on this occasion, using abusive language toward the claimant and frightening her by his conduct. Immediately after he left, she suffered a stroke causing total and permanent disability. The insurance company argued that since the incident precipitating the stroke created no greater hazard than those to which the claimant would have been exposed outside of the employment, it was not a compensable accidental injury. The court in rejecting the insurance company's argument stated that the claimant's burden is to prove that ,she received an injury while in the performance of her duties: What the law intends is to protect the employee against the risk or hazard taken in order to perform the master's task. 6 0 It did not matter to the court that she could have been exposed to similar hazard outside of the employment, it was only significant that she received the injury as a result of a hazard in the employment. The principles applied in Hart as well as the court's rationale in reaching the opinion that Hart had suffered a compensable accidental injury is, within its factual limits, very much in line with heart attack cases precipitated by physical strain or exertion previously discussed. In each case, the court found through direct or circumstantial evidence an injurious event traceable to a definite time, place, and cause involving a risk of the employment. However, the broadening scope of compensable heart attacks precipitated by psychic stimuli and strain was 6X slowed by the supreme court in Olson. The court held that Olson did not suffer a compensable accidental injury allegedly caused by three or four irritating or frustrating experiences on the job over a 19 day period prior to his attack. The court stated that no attempt was made to connect any of the incidents to his heart attack and therefore the cause could not be "accidental" since it was not traceable to a definite time, place, and cause. Unlike Bailey and Hart where the claimant established a causal relationship between the injury and a particular instantaneous on the job event, Olson's claim was based on a series of job connected incidents over an extended period of time which had the cumulative effect of causing stress precipitating the heart attack. The court refused to recognize this circumstantial evidence as establishing a sufficient causal relation between the injury and a job-related event. The dissent in Olson charged that the majority opinion would effectively rule out compensable heart attacks unless the claimant could show that the injury was traceable to an isolated precipitating event. This burden was not realized in the subsequent supreme court decisions (33 Baird and Henderson. As has already been discussed, Baird acknowledged that proof of a casual connection was often circumstantial or based 64 on answers by expert witnesses to key potential questions. In Henderson, compensation was granted on evidence that the deceased's job COULD have 242 JLrV 20 C been strenuous. The effect of Olson in light of these subsequent decisions in understanding the burden the claimant has in establishing a compensable physic induced heart attack is unclear. Neither case overruled Olson, but to the contrary ruled that the precipitating cause of the injuries in their cases fell within the definition of compensable accidental injury as set out in Olson. One explanation for this apparent discrepancy is found in the opinion of the court of civil 66 appeals in Olson which distinguished the facts in Bailey and Hart. The court went on to state: . . . an examination of the cases that deal with injuries resulting from shock, fright and other conditions not of traumatic origin, seem to require that there be MORE OF A DIRECT CAUSAL CONNECTION in that the injury was immediate, substantial, and obviously connected with the incident.6 7 This rationale was echoed in Henderson as the court distinguished its facts from the facts of Olson. However, only a superficial reading of these cases might leave the impression that psychic induced injuries as in Olson are not compensable as accidental injuries when the injury is not traceable to a particular precipitating event. job-related The effect of Henderson and Baird on the Olson decision is to recognize that circumstantial evidence is sufficient to establish an accidental injury if the court can find a causal relationship between the injury and jobrelated stress and exertion. Although the injuries in Bailey and Hart were traceable to a particular event 262 21 thereby making circumstantial evidence inconsequential; the courts stood for much broader principles. "Harm" was defined to mean that the body no longer functioned as it should, and that if the harm arose from a risk or hazard of the employment it was compensable.^ The supreme court in Bailey as already discussed rejected any dichotomy between physically induced harm and psychic induced harm. The court in Hart went on to say that it did not matter that the claimant could be exposed to a similar hazard outside of employment but what was significant was that the claimant received the injury as a result of a hazard exist69 ing in the employment. The supreme court's holding in Olson denied compensation because the claimant failed to prove through direct or circumstantial evidence an injurious event traceable to a definite time, place, and cause involving a risk of the employment. Olson is illustrative of a problem common in many claims based on psychic induced injuries in which the court is unable to find a causal connection between the events, and any RISK or HAZARD that might exist in the employment. A case to illustrate this problem is Havse v. Seaboard 70 Fire and Marine Insurance Company. Hayse alleged that he had suffered an accidental injury in the course of his employment resulting from a belief he was loosing his job due to his supervisors' actions one morning at work. Com- pensation was denied because Hayse failed to show that the 262 22 alleged injury was of a kind and character that had to do with or originated in the employer's work, trade, business or profession. The court stated: To hold that worry and anxiety over job loss is 'connected with what a workman has to do in performing his contract would be in our opinion not reasonable' . . . (The injury) was related to Hayse's mental and emotional state over an incident and. not job-related.^ In other words, the incident which gave rise to the emotional stimulus that precipitated the- erratic heart rate was merely a personal one and not connected with what he had to do in performing his contract of service. In Olson, the incidents allegedly precipitating the heart attack were job related. As a well logger, Olson was required to keep accurate and close schedules of logging of drill cutting as the well progressed. The incidents which occurred separately over a 3 week period which interferred with the tight schedule this type of job required.included: 1) the order to change the log entries identifying the type of formation, 2) unclogging a drain carrying the drill cuttings, 3) clearing an incoming cutting line; and 4) the malfunctioning of an important detecting device. Olson's claim could not have been summarily dismissed as incidents of merely a personal nature that were not connected with what he had to do in performing his contract of service. The dissent in 01son charged that the heart attack was "caused by a work induced state of mind" which "is a compensable injury to the same 72 extent as one caused by physical strain. The majority insisted that compensation must be denied because the injury did not fall within the confines of an accidental injury traceable to a definite time and place. In light of the 1971 revisions of Article 8306, Section 20, it would have been interesting to see if Olson might have been granted compensation under the new broader definition of occupational diseases which provides compensation for job related injuries notwithstanding the inability of the claimant to prove an injurious event traceable to a definite time, place, and cause. The Reforms of 1971 and the Compensability of Heart Attacks In a spirit of reform tempered perhaps with compromise, the Texas Legislature rewrote Section 20 of Article 8306 eliminating the antiquated system of listing compensable occupational diseases and replacing it with a comprehensive 73 definition designed to broaden its scope. Also significant, was the repeal of several sections in Article 8306 which removed many of the barriers to compensation for occupational diseases. Section 25 had limited occupational diseases to certain infirmities and required that in most cases the incapacity had to result within one year after exposure to the cause or recovery would be barred. Section 26 contained special provisions for recovery in cases of silicosis and asbestosis. Section 27 limited compensation to only the 74 acute phases of certain allergies or diseases.' 24 As discussed earlier, before the reforms, there were many cases where the afflictions could not satisfy the restrictions of occupational diseases and could not be classified as an accidental injury. 75 In Frazier v. 76 Employers Mutual Casualty Company, the claimant suffered a spasmodic torticollis resulting from an accelerating work load and increased responsibilities over a two year period. In denying compensation, the court showed the inadequacies of the workmen's compensation laws in this area: To hold that appellant (Frazier) under these facts, has sustained an injury, or an accidental injury, under our Workmen's Compensation law would be to disregard the distinction which the Legislature has made between an injury and a disease emanating from an occupation . . . Under the evidence appellant has contracted a disease, at least partly, from the work in which she engaged. As to her work, it is an occupational disease.?? Another case where the claim was based on an industrial disease which was not one of the enumerated occupational 78 diseases, was Haley v. Texas Employers Insurance Association. Here the claimant had suffered from tuberculosis which was accelerated and aggravated by inhalation of grain dust over a two year period at his place of employment. The court concluded that since the action arose prior to the 1971 Legislative reforms, tne jury's failure to find accidental 79 injury was fatal to the plaintiff's cause. The 1971 amendments eliminated many of these deficiencies 262 25 and brought Texas in line with, a majority of jurisdictions 80 which provide compensation for all occupational diseases. The meanings of the terms "Injury" and "Personal Injury" remained the same after the 1971 revision of Section 20. However, occupational diseases were now to be considered compensable injuries in so far as the affliction arose out of the employment: The statute provided: Whenever the term 'Occupational Disease' is used in the Workmen's Compensation Laws of this State, such term shall be construed to mean ANY DISEASE ARISING OUT OF AND IN THE COURSE OF EMPLOYMENT WHICH CAUSES DAMAGE OR HARM TO THE PHYSICAL STRUCTURE OF THE BODY and such other diseases or infections as naturally result therefrom.81 Significantly, in view of cases like Frazier, Haley, and perhaps Olson, the legislature added: An 'Occupational Disease' shall also include damage or harm to the physical structure of the body occurring as the result of REPETITIOUS PHYSICAL TRAUMATIC ACTIVITIES EXTENDING OVER A PERIOD OF TIME AND ARISING IN THE COURSE OF EMPLOYMENT: provided, that the date of the cumulative injury shall be the date disability was caused thereby. As will be subsequently discussed, controversy has arisen over the proper construction and application of the phrase "repetitious physical traumatic activities." Finally, to keep the new provisions within the traditional framework of the Workmen's Compensation Laws the legislature concluded the revised section stating: 262 26 ORDINARY DISEASES OF LIFE to which the general public is exposed outside of the employment SHALL NOT BE COMPENSABLE, except where such diseases follow as an incident to an 'Occupational Disease' or 'Injury' as defined in this s e c t i o n . 8 3 In an amendatory note, the Legislature perhaps tempered its fervid spirit of reform by stating: It is the express intent of the Legislature in enabling this act that nothing contained in this act shall ever be deemed or considered to limit or expand recovery in cases of mental trauma accompanied by physical trauma. Authorities have split over the proper import of this note especially concerning the compensability of cumulative in85 juries resulting from mental trauma. One authority has construed the statement to have reemphasized what he interprets as the statutory limitations of occupational diseases resulting from cumulative injuries to repetitious PHYSICAL traumatic injuries. His position is that prior to the 1971 reforms .injuries traceable to a specific precipitating cause was compensable as an accidental injury. The enumerated list of occupational diseases was to assure compensation for certain cumulative injuries, all of which were physically induced. The new provision now allows all "physical" traumatic injuries that are cumulative by nature and job-related to be compensable as occupational diseases. He argues that since mentally induced incapacities have never been compensable as occupational diseases; the legislature, by their amendatory note, intended for there to be 262 262 27 no change as to compensation for cumulative injuries resulting from mental trauma thereby limiting cases like Bailey and Hart to the confines of accidental injuries.^ To substantiate this rationale some of these authorities maintain that the second part of the definition of occupational disease is not disjunctive from the rest of the definition but the phrase "shall also include" means that the definition must be construed as a whole. The significance of this position is that it would not only eliminate mental stimuli as an alleged cause of a cumulative injury; since arguable such injuries all to be limited to repetitious PHYSICAL traumatic activities only; but mental stimuli would be eliminated as a possible cause of any occupational disease. 87 Other authorities insist that this legislative note effectively minimize what might otherwise have been a harsh and stiffling impact on the development of law in this area, and therefore allows the statute to retain 38 certain flexibility as the law develops. Their contention is that prior to the 1971 amendments an injured employee who was inflicted with a disease not specified in the statute was denied compensation not because he did not have an occupational disease, but because it failed the "accidental injury" test. This was true regardless if the injury was physically induced or psychic induced. the same. Both were treated The event precipitating the injury had to be 28 traceable to a time, place, and cause. These authorities maintain that occupational disease now has practically the same definition as accidental injuries. This in effect allows compensation for these injuries as occupational diseases whether they are physically or psychic induced injuries. The rationale continues that now the principles set out in Bailey and Hart need no longer be confined to accidental injuries. Therefore, infectious 'diseases, cumulative injuries psychic injury cases, neuroses, and heart attacks are now compensable whether they are caused by infections, mental stress, physical stress, aggravation, or the cumulative effects of either. All are 'injuries' under the Bailey construction and 'injury' simply means that the body no longer functions properly. If it had arisen slowly and gradually it would have been an 'occupational disease.' If it had been traceable to a definite time, place, and cause, it would have been an 'accidental i n j u r y , ' 9 0 The impact of the revisions to Section 20 on the compensability of occupational disease is not yet clearly developed. Many claimants still tend to base their claims on the more familiar grounds of accidental injuries, rather than to venture out into the uncertainties surrounding these new provisions of occupational diseases. One case that construed the revised section broadly 91 was Charter Oak Fire Insurance Company v. Hollis. The claimant, a boilermaker, alleged that as a result of inhaling toxic substances on a particular occasion as well as those he had been exposed to over twenty years of employment in 29 that capacity, had the cumulative effect of rendering him totally and permanently disabled. The court in affirming the trial court's judgement granting compensation asserted that claiment's allegation was proper under the revised Section 20. The insurance company argued that the afflictions of the claimant which included arteriosclerosis, thrombophlebitis, and general venous insufficiency were "ordinary diseases of life" and hence not compensable. The court disagreed and stated that whi1e there was no medical testimony that established that in reasonable medical probability claimant's disability was caused by the one event or the cumulative effect of prior exposure, it was no longer necessary under the revised statute to prove either an event traceable to a definite time, place, and cause or a listed occupational 97 disease. " The opinion in the Hollis case is significant if a trend is developed blurring the traditional distinction between claims for accidental injury and occupational diseases. Although a claimant who alleges that he has suffered a cumulative injury may not under the revised Section 20 be burden with tracing the injurious event to a definite time, place, and cause; he must nevertheless establish a causal connection between the injury and events or conditions arising out of the employment. Some jurisdictions require that a cumulative injury absent an exceptional injury causing event, must be 262 30 accompanied by physical force or exertion to be compensable. 93 A major of jurisdictions now hold to the contrary. The United States Court of Appeals for the District of Columbia in Hoage v. Royal Indemnity Company 94 in construing 95 pertinent sections of the D.C. code sustained a claim for total disability resulting from a heart attack allegedly caused by overwork over a nine-month period. The claimant, an insurance adjuster, had been under the strain of .a gradually increasing workload and had suffered fatigue, headaches, insomnia, and heart burn from the job pressures and long hours. Eventually, he suffered a heart attack at his desk. The court in sustaining the claim stated: We think the testimony . . . tends to show that (the claimant) by reason of mental strain, worry, and long excessive hours of labor suffered a collapse . . . His case is comparable to that of a manual laborer whose heart collapses as a result of a long, continued physical strain or overwork resulting from excessive exertion. The Supreme Court of Mississippi in Insurance Department 97 of Mississippi v. Dinsmore recognized that mental and emotional strain from an employee's work was a factor contributing to her disability. In finding that proof of hypertension from mental and emotional exertion was sufficient to establish a causal connection the court reasoned that it is "unthinkable" to accept physical exertion as causative, but reject as accidental, a disability 98 proximately resulting from mental and emotional strain." The similarities between the sections in the California nrq 31 Code dealing with cumulative injuries and occupational diseases and Texas' revised Section 20 is worth noting. Section 3208 of the California Code states: Injury includes any injury or disease arising out of the employment . . . 99 Section 3208.1 entitled "specific or cumulative injuries" states: An injury may be either: (a) 'specific' occurring as the result of one* incident or exposure which causes disability or need for medical treatment or (b) 'cumulative,' occurring as repetitive mental or physically traumatic activities extending over a period of time, the combined effect of which causes any disability or need for medical treatment; provided, however, that the date of the cumulative injury shall be the date of disability caused thereby. 100 Compensation for cumulative injuries has long been recognized in California. In stating the proper framework for establish- ing the causal connection, one court declared: We think the proposition irrefutable that while a succession of slight injuries in the course of employment may not in themselves be disabling, their cumulative effect in work effort may become a destructive force. The fact that a single but slight work strain may not be disabling does not destroy its causative effect, if in combination with other such strains, it produces a subsequent disability. The single strand, entwined with others, makes up the rope of causation. 101 Like Mississippi and the District of Columbia, California awards compensation for cumulative injuries caused by psychic in? stress and strain. Most jurisdictions appear to draw no distinctions between the burdens of proof of physical and psychic induced injuries. 262 32 At least one authority finds a glaring contrast between the California code that includes repetitive "MENTAL OR PHYSICALLY TRAUMATIC ACTIVITIES" as causes of cumulative injuries, and the Texas statute that only includes "repetitious PHYSICAL traumatic activities." 1 0 5 Perhaps the Texas Legislature in bringing this state into the mainstream with most jurisdictions in recognizing compensable cumulative injuries nevertheless intended to remain one of the last bastions for denying compensation for cumulative injuries resulting from mental or emotional strain. However, at least one recent case indicates that this may not be the situation in Texas afterall. 104 Transportation Insurance Company v. Maksyn, is one of the first cases clearly dealing with the compensability of non-impact emotional or mental injury. The claimant was employed as an advertising service manager for a city newspaper for 28 years. He claimed to have suffered an anxiety depression, caused by pressures of his employment and this disease caused numbness of the hands and feet, high blood pressure, and vertigo. In appealing an adverse judgement, the insurance company alleged that: 1) there was no evidence of any physical activities which would produce an occupational disease; 2) that since the claimant only showed mentally traumatic activities there was no evidence that he suffered repetitious PHYSICAL traumatic activities; 3) that the claimant's anxiety depression was 33 a non-compensable ordinary disease of life; and 4) that there was no causal connection between the alleged physical activities and defendant's occupational disease. In re- jecting the appellant's arguments, the court concluded that there was ample evidence of physical and mental activities to satisfy claimant's burden under the revised section to prove he had suffered damage or harm to the physical structure of the body that cuminated into an occupational disease. The court cited the Bailey case to support claimant's position that injuries caused by psychic stimuli are compensable as harm to the body which no longer functions as it should. The court refused to accept the appellant's contention that injury in the Bailey case should be distinguished since the cause of the injury was from a single event while the injury in this case allegedly occurred over an extended period of time from a slow buildup of stressful activities. The court continued: We see very little justification for a holding that a claimant can recover for a neurosis occasioned by one traumatic experience, but cannot recover for a similar neurosis caused by a number of such traumatic experiences. 105 In commenting on the claimant's burden of proof in such cases the court stated that there must be evidence of probative force to show a causal connection between the employment and the occupational disease so as to distinguish the affliction from an "ordinary disease of life." To satisfy this burden the court asserted, the disease may be 262 34 "indigenous to the claimant's work or present in an increased degree in that work as compared with employment generally. The court found a causative connection between the defendant's anxiety depression and the cumulative strain of his work. The long range influence of this recent decision on subsequent courts' construction of Section 20, and its impact on the development of cumulative injuries resulting from psychic stimuli as compensable occupational disease is as of yet unclear. However, it is apparent that this court has taken a bold step in leading the way to providing in Texas for all work-induced injuries. Compensability of Heart Attack and Social Considerations The reaction of most employers and insurance carriers of workmen's compensation to the Maksyn decision is that it will open a "Pandora's Box" and they will be subject to fradulent and frivolous claims. Many argue that heart attacks are not known to be caused by one simple stressful event, or even several stressful events. simply the triggering mechanism. The event is The fact that there can be several contributing causes to heart disease, a series of frustrating or stressful on the job events caused by mental or emotional stimuli should not be held as arising 107 out of the course of employment. Hoivever, medical science recognizes that mental disorders and diseases can result 262 35 from work-related events or conditions through physical or psychic causes. Arguably, it belabors the question of com- pensability to ask if harm done to the physical structure of the body is physically or psychic induced when probative evidence shows it is work-induced. 103 The key to satisfying the burden of proof in cumulative injury claims is to establish through probative evidence a causal connection between the occupational disease and a work-related precipitating cause or causes. Recognizing that Baird and Henderson both acknowledged that oftentimes such evidence is circumstantial or based on answers from hypothetical questions from medical testimony, it has been suggested that evidence sufficient to satisfy claimant's burden should come from the standard set in Maksyn or from expert medical testimony. The elements for compensable occupational disease in the Maksyn opinion require that the disease be indigenous to the claimant's work or present in an increased degree in that work. This standard was proposed by a recognized scholar in workmen's compensation law, n r a t Larson. 109 Professor A. Professor Larson's position is that the disparity between the rationale of heart attack cases has been caused at least in part, by the courts oftentimes strained logic in identifying an "unusual" strain in the course of employment that precipitated the injury. An "unusual" strain is relative to the work situation and health of the claimant. 36 Because of the relative nature of "unusual" strain many cases have allowed compensation when there was no more X10 than routine stress and exertion. Larson's proposed solution is a "positional risk" doctrine. It has been designed to attempt to bring consistency in determining if the occupational disease arose out of the employment because of an "actual" risk inherent in the job.^"*" As applied to heart cases the rule would be: If there is some personal causal contribution in the form of a previously weakened or diseased heart, the employment contribution must take the form of an exertion greater than that of nonemployment life . . . If there is no personal causal connection, . . . any exertion connected with the employment and causally connected with the collapse as a matter of medical fact is adequate to satisfy the legal test of causation . . . The claimant must also show that medically the peculiar exertion contributed causally to the heart attack . . . 112 The court-made overexertion test and Larson's "positional risk" doctrine apply to heart attacks and strokes only. The distinction between the burden of proof in heart attack cases arid other claims for accidental injuries or occupational diseases has been the fear that heart cases would get out of control unless some kind of arbitrary boundaries were set. However, such a distinction is unfair in light of the fact that no extra burden is placed on other physical injuries where the processes of disease and mechanical process of the injury are similar to heart attacks. One such injury is a back injury resulting from a disc herniation. 262 There is no 37 special requirement that the claimant show an "unusual" strain that caused the accident. Any cause will suffice. This is true although it is recognized that herniated disc are often the end result of a lifelong degenerative process 113 and the event which causes the injury could happen anywhere. Such proof of a special or unusual strain or "higher risk" should not be a prerequsite to compensation for work-induced heart attacks. In establishing the causal connection, courts have in many cases depended heavily on expert medical testimony. 1 1 ^ However, special problems have arisen as to the standards used for establishing causal connections by the medical concept of cause and the necessary legal causative connection. Medically, "the cause" may be considered "that activity or agent without which a condition would not have appeared.^ Legally "the cause" is the factor or element that "plays a role in bringing about a result sooner than ordinarily would be expected . . ." The medical expert in determining the "cause" of the heart attack takes into consideration many factors. These factors include: the personality of the individual (i.e., is he high strung or easy going?) and how that type of personality might react to a stimulus; the habitual and routine physical activities (i.e., was he regularly involved in repetitious strenuous physical activities?); the medical history of the person (i.e., did he have a developing heart O 60 38 ailment and this effect upon "the cause"); the time interval between the exposure to the potential stimulus and the 117 heart attack; and so on. Inherent in these factors are considerations for "unusual" stress and strain and "higher risk." Since such factors are inherent in a medical expert's determination of the "the cause" of the heart attack, to require the claimant to establish "unusual" strain or "higher risk" as an element in the legal "cause" beyond that which the medical expert has already considered, would place an unreasonable burden on the claimant. There should be no special burden of proof placed upon a claimant who has suffered a heart attack in establishing a compensable claim as long as there is sufficient probative evidence to establish a causal relationship between the injury and a hazard or condition within the employment. The claimant should be able to establish probative evidence by showing (1) that the disease or particular event is indigenous to his work and that it was the precipitating cause of his injury or (2) expert medical testimony that "the cause" of the disease or injury was related to his employment. The latter part of Section 20 states that "ordinary diseases of life to xvrhich the general public is exposed outside of employment shall not be compensable." The proper emphasis initiated by the legislature is on broadening the compensation of work related injuries as "accidental" or 118 as "occupational diseases." As the court said in Garcia: 39 "The injury is compensable . . . because it exists as one of the conditions of the employment." Heart attacks should likewise be compensable even when the risk may be no different in degree than that to which a claimant may be exposed outside of his employment as long as he can show that the precipitating cause or causes were work-induced. When a claimant is shown to have had a heart attack and one of the factors making him susceptible to the attack was "an ordinary non-compensable disease of life to which the general public is exposed," a total defense to recovery. such proof should not act as The Legislature in its revision 119 of Article 8306, conspiciously left in tact Section 22 which allows a proportional reduction of the total compensation for an occupational disease aggravated by any non-compensable disease. This is a more equitable and proper solution as the scope of compensability occupational diseases broadens, for it protects the employee's right to compensation for workinduced injuries, and at the same time protect the employers from liability of injuries arising outside of the employment. 262 FOOTNOTES 1. TEX. LAWS 1947, ch. 113, §20. "Section 20. Wherever the terms 'injury' or 'personal injury', are used in the Workmen's Compensation Law of this state, such terms shall be construed to mean damage or harm to the physical structure of the body and such diseases or infection as naturally resuly therefrom. Unless from the context the. meaning is clearly to the contrary, such terms shall also be construed to mean and include occupational diseases, as hereinafter defined. The following diseases only shall be deemed to be occupational diseases: "(a) Posioning by: (1) Aluminum Trioxide; (2) Arsenic; (3) Benzol or its homologues and derivatives; (4) Beryllium; (5) Cadmium; (6) Carbon Bisulphode; (7) Carbon Dioxide; (8) Carbon Monoxide; (9) Chlorine; (10) Cyanide; (11) Formaldehyde; (12) Halogenated Hydrocarbons; (13) Hydrochloric Acid; (14) Hydrofluroic Acid; (15) Hydrogen Sulphide; (16) Lead; (17) Manganese; (18) Mercury; (19) Methanol (Wood Alcohol); (20) Methanol Chloride; (21) Nitrous Fumes; (22) Nitric Acid; (23) Petroleum or Petroleum Products; (24) Phosphorus; (25) Selenium; (26) Sulphuric Acid; (27) Sulphur Dioxide; (28) Sulphur Trioxide; (29) Tellurium; (30) Thallium; (31) Zinc; "(b) Anthrax caused by handling of wool, hair, bristles, hides and skins; "(c) Blisters caused by prolonged or repeated use of tools or mechanical appliances; "(d) Synovitis, Tenosynovitis, or Bursitis due to an occupation involving continual or repeated pressure on the parts affected; "(e) Chrome ulceration; "(f) Compressed air illness; "(g) Dermatitis, that is, inflammation of the skin due to oil, cutting compounds or lubricants» dust, liquids, fumes, gases or vapors; "(h) Diseased condition caused by exposure to x-rays or radioactive substances; "(i) Diseased condition of the eyes due to electric arc and welding, and cataract in glass workers; "(j) (Epitheliomatous cancer) or ulceration of the skin or corneal surface of the eye caused by tar, pitch, bitumen, mineral oil or paraffin or any compound, product or residue of any of these substances; "(k) Glanders and other diseased conditions caused by handling any equine animal or the carcass of any such animal; "(1) Infections or contagious disease contracted in the course of employment in or in immediate connection with a hospital or sanatorium in which persons or animals suffering from such disease are cared for or treated; "(m) Nystagmus incurred in underground work; "(n) Ansestosis; "(o) Silicosis." 2. Hartford Accident and Indem. Co. v. Olson, 466 S.W.2d 373, 375 (Tex. Civ. App. 1971), Aff'd. 477 S.W.2d 859 (Tex. 1972) . 3. Hood v. Texas Indem. Ins. Co., 146 Tex. 522, 209 S.W.2d 345 (Tex. 1948). Sartwelle, Workmen's Compensation, 29 Sw. L.J. 183, 184 (1975). — 4. Cases where claimant denied recovery for diseases allegedly job related: Hadley v. Texas Employer's Ins. Ass'n., 487 S.W.2d 369 (Tex. Civ. App. 1972, writ ref'd n.r.e.). Olson v. Hartford Accident and Indem. Co., 477 S.W.2d 859 (Tex. 1972). Hartford Accident and Indem. Co., v. McFarland, 433 S.W.2d 534 (Tex. Civ. App. 1968, writ ref'd. n.r.e.). Employer's Mut. Liab. Ins. Co. of Wisconsin v. Parker, 418 s'.W. 2d 570 (Tex. Civ. App. 1967), aff'd,. 440 S.W.2d 43 (Tex. 1968) . Frazier v. Employer's Mut. Cas. Co., 368 S.W.2d 955 (Tex. Civ. App. 1963), writ ref'd. n.r.e.). 5. TEX. REV. CIV. STAT. ANN. art. 8306, 120 (Supp. 1978). Sec. 20. Wherever the terms "Injury" or "Personal Injury" are used in the Workmen's Compensation Laws of this State, such terms shall be construed to mean damage or harm to the physical structure of the body and such diseases or infections as naturally result therefrom. The terms "Injury" and "Personal Injury" shall also be construed to mean and include "Occupational Diseases," as hereinafter defined. Whenever the term "Occupational Disease" is used in the Workmen's Compensation Laws of this State, such term shall be construed to mean any disease arising out of and in the course of employment which causes damage or harm to the physical structore of the body and such other diseases or infections as naturally result therefrom. An "Occupational Disease" shall also include damage or harm to the physical structure of the body occurring as the result of repetitious physical traumatic activities extending over a period of time and arising in the course of employment; provided, that the date of the cumulative injury shall be the date disability was caused thereby. Ordinary diseases of life to which the general public is exposed outside of the employment, shall not be compensable, except where such diseases follow as an incident to an "Occupational Disease" or "Injury" as defined in this section. 6. H.R. COMM. ON JUDICIARY, 62d Leg., REPORT ON S.B. 265, at 4 (April 21, 1971). 7. TEX. REV. CIV. STAT. ANN. Art 8509, §1 (1925). 8. American Gen. Ins. Co. v. Smith, 163 S.W.2d 849 (Tex. Civ. App. 1942, error ref'd.). Aetna Life Ins. Co. v. Harris, 83 S.W.2d 1087 (Tex. Civ. App. 1935 , no writ). Employers' Liab. Assurance Corp., Ltd. v. Flint, 14 S.W.2d 1046 (Tex. Civ, App. 1929, writ ref'd.). Buchanan v. Maryland Cas. Co., 288 S.W. 116 (Tex. Comm. App. 1926). Texas Employers' Ins. Ass'n. v. Jackson, 265 S.W. 1027 (Tex. Comm. App. 1924). 9. Maryland Cas. Co. v. Broadway, 110 F.2d 357 (5 Cir. 1940). Texas Employers' Ins. Ass'n. v. Hilderbrandt, 80 S.W.2d 1031 (Tex. Civ. App. 1935, error granted). Gordon v. Travelers' Ins. Co., 287 S.W. 911 (Tex. Civ. App. 1926, writ ref'd.). Aetna Life Ins. Co. v. Graham, 284 S.W. 931 (Tex. Comm. App. 1926). 10. Gordon v. Traveler's Ins. Co., 287 S.W. 911 (Tex. Civ. App. 1926, writ ref'd.). 11. Hood v. Texas Indem. Ins. Co., 209 S.W.2d 345 (Tex. 1948). Huffman v. Southern Underwriters, 128 S.W.2d 4 (Tex. 1939). 12. Traders and Gen. Ins. Co. v. Rooth, 268 S.W.2d 539 (Tex. Civ. App. 1954, writ ref'd. n.r.e.) Texas Employers' Ins. Ass;n. v. Robinson, 241 S.W.2d 339 (Tex. Civ. App. 1951, writ ref'd. n.r.e.). Texas Employers' Ins. Ass'n. v. Wade, 197 S.W.2d 203 (Tex. Civ. App. 1946, writ ref'd. n.r.e.). 13. Salinas v. New Amsterdam Cas. Co., 67 F.2d 829 (5th Cir., 1933) . Henderson v. Travelers' Ins. Co., 544 S.W.2d 649 (Tex. 1976) . Pan American Fire and Cas. Co. v. Reed, 436 S.W.2d 561 (Tex. Civ. App. 1969, writ ref'd. n.r.e.). Hartford Accident and Indem. Co. v. Gant, 246 S.W.2d 359 (Tex, Civ. App. 1961, no writ). Carter v. Travelers' Ins. Co., 120 S.W.2d 581 (Tex. 1938). 14. Hood v. Texas Indem. Co., see note 3. 15. Southwestern Sur. Co. v. Owens, 198 S.W. 662 (Tex. Civ. App. 1917, writ ref'd.). 16 Solomon v. Massachusetts Bonding and Ins. Co., 347 S.W.2d 17 (Tex. Civ. App. 1961, writ ref'd.). Frazier v. Employers' Mut. Cas. Co., 368 S.W.2d 955 (Tex. Civ. App. 1963, writ ref'd. n.r.e.). 17 TEX. LAWS 1947, see note 1. 18 Barron v. Texas Employers' Ins. Ass'n., 36 S.W.2d 464 (Tex Comm. App. 1931). Buchanan v. Maryland Cas. Co., 288 S.W. 116 (Tex, Comm. App. 1926). 19 Other diseases held not compensable: see note 4. 20 Whitaker v. General Ins. Co. of America, 461 S.W.2d 148 (Tex. Civ. App. 1970, writ ref'd. n.r.e. Southern Cas. Co. v. Flores, 1 S.W.2d 260 (Tex. Comm. App. 1928). 21 Massachusetts Bonding and Ins. Co. v. Massey, 123 F.2d 447 (5th Cir. 1942). Employers' Cas. Co. v. Smith 221 S.W.2d 322 (Tex. Civ. App 1949, writ ref'd. n.r.e.). see also Hartford Accident and Indem. Co. v. Gant, note 13. Traders and Gen. Ins. Co. v. Rooth, note 12. 22 South Carolina, Pennsylvania, New Jersey, Idaho, Maryland, Minnesota, Virginia, Michigan, Missouri, Ohio, Louisiana, Florida, North Carolina, and New Hampshire. 23 Maryland v. Rogers, 86 S.W.2d 867 (Tex. Civ. App. 1935, writ ref'd.). see also: Maryland Cas. Co. v. Broadway, note 9. Hartford Accident and Indem. Co. v. Olsen, note 2. 24 See cases, note 4. 25 0'Dell v. Home Indem. Co., 449 S.W.2d 485, 487 (Tex. Civ. App. 1969, writ ref'd. n.r.e.). 26. Southern Cas. Co. v. Flores, see note 20. 27, Id. at 261. 28 . Gorman v. American Gen. Ins. Co., 179 S.W.2d 814 (Civ. App. 1944), writ ref'd. w.m.). 29. Sartwelle, Workmen's Compensation, 30 Sw. L.J. 213, 247 (1976). ~ 30, Henderson v. Travelers' Ins. Co., see note 13. 31 Aetna Ins. Co. v. Hart, 315 S.W.2d 169 (Tex. Civ. App. 1958, writ ref'd. n.r.e.). 32 Id. at .172-3. 33 Traders and Gen. Ins. Co. v. Rooth, see note 12. 34 See cases note 13. 35 United States Fidelity and Guar. Co. v. Herzik, 359 S.W.2d 914 (Tex. Civ. App. 1962, writ ref'd. n.r.e.). 36 Id. at 919. 37 Midwestern Ins. Co. v. Wagner, 370 S.W.2d 779 (Tex. Civ. App. 1963, writ ref'd. n.r.e.). 38 Pan American Fire and Cas. Co. v. Reed, see note 13. 39 Midwestern Ins. Co. v. Wagner, see note 37 at 782. 40 Pan American Fire and Cas. Co. v. Reed, see note 13 at 563 . 41 Garcia v. Texas Indem. Co., 209 S.W.2d 333 (Tex., 1948). 42 Id. at 337. 43 Travelers' Ins. Co. v. Smith, 448 S.W.2d 541 (Tex. Civ. App. 1969, writ ref'd. n.r.e.). Monks v. Universal Underwriters' Ins. Co., 425 S.W.2d 431 (Tex. Civ. App. 1968, writ ref'd. n.r.e.) 44 O'Dell v. Home Indem. Co., see note 25. 45 Id.. at 48 7. 46 Henderson v. Travelers' Ins. Co., see note 13. 1 44 / Ld. at 654. 48 Baird v. Texas Employers' Ins. Ass'n., 495 S.W.2d 207 (Tex. 1973). 49, Id. at 211. 50 51, 52. Olson v. Hartford Accident and Indem. Co., see note 4. Spivey, Workmen's Comp. Corner: injuries without impact under workers*1 comp., 13 Texas Trial Law F . '38 (July-September, 197 81 . American Gen. Ins. Co. v. Ariola, 187 S.W.2d 585 (Tex. Civ. App. 1945, writ ref'd. w.m.). 267 53 Hood v. Texas Indem. Co., see note 3. 54 Id. at 348. 55 Walker, Recovery for Injuries to the Nervous System Under the Texas Workmen rs~TTompensation Act, IX Baylor L. Rev. 144 , 145 (19 5 7 J . 56 Bailey v. American Gen. Ins. Co., 279 S.W.2d 316 (Tex. 1955) . 57 Id. at 318. 58 Id. at 319. 59 Aetna Ins. Co. v. hart, see note 31. 60 Id. at 174. 61 Olson v. Hartford Accident and Indem. Co., see note 4. 62 Baird v. T.E.I.A., see note 48. 63 Henderson v. Travelers' Ins. Co., see note 13. 64 See Baird v. T.E.I.A., note 49. 65 See Henderson v. Travelers' Ins. Co., note 47. For other cases where compensation allowed notwithstanding the absence of an isolated precipitating cause see also: Commercial Standard Fire and Marine Co. v. Thornton, 540 S.W.2d 521 (Tex. Civ. App. 1976, writ ref'd. n.r.e.). Transport Ins. Co. v. McCully, 481 S.W.2d 948 (Tex. Civ. App. 1972, writ ref'd. n.r.e.). 66 Hartford Accident and Indem. Co. v. Olson, see note 2. 67 Id. 68 . Bailey v. American Gen. Ins. Co., see note 58. 69, Aetna Ins. Co. v. Hart, see note 60. 70 , Hayse v. Seaboard Fire and Marine Ins. Co., 562 S.W.2d 282 (Tex. Civ. App. 1978, no writ). 71, 7 2 , Olson v. Hartford Accident and Indem. Co., see note 4 at 862. 73. H.R. COMM ON JUDICIARY, see note 6. 268 74 TEX. REV. CIV. STAT. ANN. Art. 8306 §§25-27 (1947). 75 Gorman v. American Gen. Ins. Co., see note 28 at 816, 76 Frazier v. Employers' Mut. Cas. Co., see note 4. 77 Id. at 959. 78 Haley v. T.E.I.A., see note 4. 79 80 Texas Workmen's Compensation — Changes in Occupational Disease, 9 How L. Rev 597 (1971). 81 Art. 8306 §20, s_ee note 5. 82 83 84 TEX. LAWS 1971, ch. 834, §5 at 2540. 85 Thomas P. Sartwelle, B.B.A., L.L.B. The University of Texas. Attorney at Law, Houston, Texas. 86 2 9 Sw. L.J, at 183-8. see note 3. 87 Broadus A. Spivey, J.D. The University of Texas, Attorney at Law, Austin, Texas, see note 51. Victor L. Terry, B.S. Rice University; L.L.B., J.D. Baylor University, Attorney at Law, Garland, Texas, see note 89. 88 See Spivey's article, note 51. 89 Terry, Occupational Disease and Cumulative Injury, 8 Texas Trial Law.F. 5,4-5 (April-June, 1974). 90 Id. 91 Charter Oak Fire Ins. Co. v. Hollis, 511 S.W.2d 583 (Tex. Civ. App. 1974, writ ref'd. n.r.e.). 92, Id. at 584. 93, Ayer v. Industrial Comm'n, 531 P.2d 208 (Ariz. Ct. App. 197 5) , Messerx v. Georgia-Pacific's Corp., 293 So.2d 615 (La, Ct. App. 1974) . 94. Hoage v. Royal Indem. Co., 90 F.2d. 387 (D.C. Cir. 1937). 95, D.C. CODE ENCYCLOPEDIA ANN. §36-501, §13. 269 "Occupational Diseases — The term 'injury' includes such occupational diseases or infections as arise naturally out of employment or as naturally or unavoidably results from an accidental injury." 96 Hoage v. Royal Indem. Co., see note 94 at 390. 97 Insurance Dep't. of Mississippi v. Dinsmore, 102 So. 2d 691 (Miss. 1958). 98 Id. at 694. 99 Cal. Lab. Code §3208 (Supp. 1977). 100 Cal. Lab. Code §3208.1 (Supp. 1977). 101 Beveridge v. Industrial Accident Comm'm., 346 P.2d 545 (Cal. Ct. App. 1959) . 102 Turner v. Southern Cal. Edison C., 117 Cal. Rpt. 358 (Ct App. .1974). Lumberman's Mut. Cas. Co. v. Industrial Accident Comm'm. 175 P.2d 823 (Cal. 1946). 103 2 9 Sw. L.J, at 183-8, see note 3. 104 Transportation Ins. Co. v. Maksyn, 561 S.W.2d 845 (Civ. App. 1978 , no writ). 105 Id. at 848-9. 106 Id. at 851. 107 29 Sw. L.J, at 187, see note 3. 108 9 Hou L. Rev, at 601, see note 80. 109 1A A. LARSON, THE LAW OF WORKMEN'S COMPENSATION §41.00 (1973) . 110 See cases note 13. 111, 1A A. LARSON, 138.81-83, see note 109 supra. 112, Id. at §38.83. 113, 30 Sw. L.J, at 246, see note 29. 114, Transport Ins. Co. v. McCully, see note Pan American Fire and Cas. Co. v. Reed, Midwestern Ins. Co. v. Wagner, see note United States Fidelity and Guar" Co. v. 35 . 270 65. see note 13. 3~7. Herzik, see note 115. Report of the Committee on Stress, Strain, and Heart Disease—American Heart Association, 55 Circulation No. 5 (may, 1977). = = = = = = 116. Id. 117. Id. 118. Garcia v. Texas Indem. Co., see note 42. 119. TEX. REV. CIV. STAT. ANN. Art. 8306 §22 (1947). 50