Industrial Rehabilitation George T. Edelman MPT, MTC Rick Hayward MPT, OCS, OMPT Scope of the Problem 5.7 Million injuries and illnesses reported in private industries in 1999 Of those, about 2.7 million were lost workday cases Of those 5.7 M, 5.3 million were accidents Injury rates higher for those mid-sized companies employing 50-249 workers. INJURY COSTS Medical Costs Employee Wages Benefit Package Payments Salary of Replacement Personnel Training of Replacement Personnel Overtime Payments for Current Personnel What do I need to know? Acute care management of patients with musculoskeletal dysfunction Functional Capacity Evaluation Job Demands Analysis Ergonomics, hazard identification and abatement Pre-employment Screening Information management What do I need to know? Work conditioning Work simulation Injury Prevention Education Fitness Governmental agencies Regulatory issues Reimbursement issues Marketing Players Worker/patient Employers Physician PTs/OTs/ Exercise physiologist Vocational Rehab consultant Psychologist Attorney Case manager Scope of Practice Most Common Treating acutely injured workers in outpt setting Return to Work Screens (mini-FCE) Functional Capacity Evaluation (FCE) Job Demands Analysis (JDA) Post-Offer / Pre-Placement Screens Worker Education Ergonomics Fitness/Wellness Overview of Lecture History, Regulations, and Agencies The Continuum of Care and Services Functional Capacity Evaluation: The Well Designed Test Job Demands Analysis Post Offer Screening Marketing & Selling Your Services to Business & Industry History, Regulations, and Agencies History - 3 Major Areas Workers Compensation Social Security Employment Selection History: Workers’ Compensation Early 1900’s - trend toward awareness of rehab of physically disabled Prior to 1910 the only recourse to bring a suit against their employers in court to claim damages for work related injuries Workers’ Compensation Law Early 1900’s increasing number of claims being settled in favor of plaintiff but many did not have resources to go to trial only 6% workers received financial relief employers risk of liability in isolated cases was astronomical - out of business in single claim History - Workers’ Compensation State Workers Compensation Law – 1910 New York – 1911 Wisconsin mandated employer-financed insurance programs created a “no fault system” where workers gave up right to sue and employers accepted limited liability purpose was prevention of poverty, not disability prevention Workers’ Compensation Law varies from state to state costs are paid by employer to state fund or insurer each state determines specific benefits received History: Workers’ Compensation By 1920, 42 out of 48 states & DC had WC laws has been called the “most dramatic event in 20th century of American civil justice”* for 25 years was the only social disability income program in the US *Darling-Hammond L, Keisner TJ: The law and economics of workers’ compensation, Santa Monica CA, 1980, Rand Publications. Understanding Workers Comp Who pays and why? – Every employer except family business, only family employees self-insured – Point is to spread risk riskier industries pay more higher injury rates pay more Who is Covered Everyone except – Baby-sitters – Temporary agriculture – Religious school teaching – Part-time domestic help – Family members in family business What is Covered? Work-related injuries or illnesses – must “arise out of and in the course of employment Includes – organized recreational functions – travel – homework – unauthorized presence in workplace Pre-existing Conditions: Pre-disposing to Injury If it occurs at work, it arises out of employment as far as the law is concerned does not matter if the injury occurs during an activity that would not have been injurious but for the preexisting sensitivity Employers must “take employees as they find them” Pre-existing Conditions: Causing Injury When cause is unclear, law will not attribute it to work unless evidence points in that direction King v. TTC Illinois Inc., Montana, 2000 – Truck driver, smoker, HBP, high cholesterol – died in cab of truck after handling tarps – medical examiner concluded death caused by preexisting heart condition – court sided with med examiner History - Workers’ Compensation 1920’s saw decline in the workers compensation system Disputes arose over whether injuries were work-related and the extent of disability By mid-1930’s debate began over whether to add disability to the social security system History: Social Security Disability Social Security system added disability coverage in increments: – – – – – – ‘54 disabled exempt from making social security payments ‘56 disability benefits began for those between 50 and 65 were unable to work due to disability ‘58 monthly benefits paid to dependents ‘60 age limitation of 50 years removed ‘65 12-month requirement added ‘72 benefits increased & Medicare benefits available to those whose disability lasted for at least 2 years SSA’s Definition of Disability The inability to do any substantial gainful activity (SGA) by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than 12 months. SSA’s Definition of Disability Impairment must be so severe that person is not only unable to do past work but considering age, education, and work experience engage in any other substantial gainful work which exists in the national economy Five Step SSA Disability Determination Process Is the individual engaged in SGA? Does the individual have a severe impairment? Does the impairment meet the listings? Can the individual do past relevant work? Can the individual do other work? History - Rehabilitation World War I - disabled veterans’ vocational needs 1920 - Passage of Vocational Rehab Act Provided funds for vocational rehab – – veterans WWI industrially injured Amendments in 1943 & 1954 History - Employment Selection Americans with Disabilities Act (ADA) July 26,1992 – – – extended legal protection from employment discrimination to handicapped Americans goes beyond traditional equal employment law and affirmative action by requiring individualized treatment on a better-thanequal basis tests cannot be used to screen out disabled individuals unless they are job-related ADA All employers of 15 or more people protects “qualified persons with a disability” – physical or mental impairment substantially limits one or more major life activities “record of” “regarded as having” – – has requisite skills, experience, education, & other job-related requirements able to perform essential functions with or without reasonable accommodations ADA - Substantial Limitation of Major Life Activity – – – – – – – – – – Caring for self Performing manual tasks Walking Seeing Hearing Speaking Breathing Learning Working Participating in community affairs ADA - Essential Functions Job function considered essential if: – – – reason job exists is to perform function limited number of employees available among whom performance of function can be distributed highly specialized so that the incumbent is hired for the ability to perform the function ADA - Reasonable Accommodations modifications or adjustments to job to enable impaired person to enjoy equal employment – – – job application process work environment benefits & privileges ADA - Undue hardship If necessary modifications create “undue hardship” employer does not have to provide Factors considered: – – – nature and cost financial resources of employer effect on the operation of the facilities/business History - Injury Prevention Williams-Steiger Occupational Safety & Health Act 1970 – – – assure safe and healthful working conditions for men and women no specific ergonomic standards ergonomic considerations covered under the general duty clause employers responsible for furnishing employees a place of employment free from recognized hazards that are likely to cause death or serious physical harm to employees OSHA Regulatory body Employers of 11 or more people Reduce hazards/comply with standards Conducts inspections Issues fines No ergonomic standards per se History - Injury Prevention 1991 - OSHA published “Ergonomics Program Management for Meatpacking Plants” covering primary components of an effective ergonomics program: Worksite Analysis – – – Hazard Prevention & Control Medical Management Training & education NIOSH set up by same act that established OSHA directed by Secretary of Health & Human Services authorized to develop standards & conduct research Work Practices Guide for Manual Lifting including formula for calculating recommended weight limit for lifting tasks Governmental agencies Department of Labor – description/classification of work Social Security Administration – disability determination NIOSH – research OSHA – regulatory Overview of Course History, Regulations, and Agencies The Continuum of Care and Services Functional Capacity Evaluation: The Well Designed Test Job Demands Analysis Post Offer Screening Marketing & Selling Your Services to Business & Industry The BIG PICTURE... Continuum of Care – Medical Model vs Work Recovery Model – Acute, Subacute, Chronic medical management work recovery management Role of assessment Importance of function Continuum of Care Medical Model Work Recovery Model – Acute – Sub-acute – Off Work – Transitional modified duty – Chronic – Return to full duty – Permanent modified duty – New permanent position – Disability Acute Care: Medical Side Acute – promote healing of tissue – minimize symptoms – maximize function Important to begin asking about job tasks and demands early! – usually patient or employer self-report – can explore occupational information DOT Job Exploration Software Work Related Function Early emphasis on work-related function is one of the hallmarks of a holistic clinician! Acute Care: Work Recovery Acute- Off work – Begin by asking about home function – Be specific activity duration – performing functional activities at home sitting standing walking lying light materials handling Acute Care: Work Recovery Aim for graded progression of home function Scheduled and structured As a measure of outcome Set stage for – problem solving – pain management exercise positioning Work Function Based on demands of job – Work simulation – Work conditioning exercises – Graded with specific goals Acute Care: Work Recovery Acute -Transitional modified work – original job – new temporary job meaningful work is optimal – guided by functional testing – communication with supervisory personnel is essential – progression Importance of Function Only way we have of knowing whether we are making a significant difference in the lives of the patients we treat is to find out about function of patient & work demands – self-report accuracy motivation – observational measurement is preferable Importance of Work-Related Functional Assessment Only objective means of determining whether patient abilities meet functional demands of work is to evaluate – asking patient to perform functional task – measuring physical demands of work – match? yes no return to work further treatment or modified work Appropriate Measurement for the Acute Stage Not full blown FCE Not formal job demands analysis Instead: – informal visit to the job site – observe the job – use the information to develop a brief screen of the most demanding aspects of the job What does the informal job site visit accomplish? Increases your – comfort level with the industrial environment – credibility in the eyes of your patient – patients’ level of trust – ability to market other industrial services – value in the scheme of treatment physicians case managers To maximize effectiveness in treating work-related injuries -get out of the clinic and into the work place! Acute Management Hands-on does not preclude patient participation – Self mobilization – Home program – Home administration of modalities – Home positioning – Functional activity Patient should have goals related to function Example: Home Program for Acute Back Patient – Spend five 20-minute sessions in side lying with towel roll between iliac crest and rib cage – Perform 10 reps of extension exercise every hour – Apply ice pack for 20 minutes twice a day – Walk for 15 minutes 5 times per day – Stand for 15 minutes 5 times per day – Perform 10 reps of stretching exercises 2 times per day What Don’t Want... Inactivity! Unstructured daily regimen Because... promotes the sick role encourages – Disuse atrophy – De-conditioning – Decreased mobility Essential Elements of Success Program should be regimented with patient keeping a home program log Set specific measurable goals Begin return to work/modified work discussions early Demonstrate interest and knowledge regarding functional/work activities Knowledge of Work-Related Function Therapist knowledge regarding work function – creates face validity for worker – builds trust – improves quality of treatment work simulation work conditioning transitional duty Subacute: Medical Management Subacute - Shift toward more – – – – – work simulation work conditioning work recovery/transitional duty posture/body mechanics training functional testing By the end of the sub-acute phase, should know whether the patient can return to former work. Subacute: Work Recovery Transitional modified duty – duration increases – duties increase Work conditioning – job specific – strengthen, stretching, endurance Work simulation – to assist with progression to next stage of transitional work/full duty Chronic: Medical Management Shifts more toward – pain management – psychological interventions – coping with residual functional capacity Chronic: Work Recovery Former job with modifications Placement in same line of work, different job – same employer – different employer Vocational assessment, exploration, counseling, retraining for new work The Functional Foundation Matching the Worker to the Work Pre-Work Screens Return to Work Work Simulation /Conditioning Transitional Modified Duty Job Demands Analysis // Functional Assessment Traditional Return-to-Work Disability Decision-Making Client self-report • Do you think you are ready to go back to work? • Do you think you are able to work? Impairment/diagnosis-based decision • Imaging studies • Range of motion • General impressions No objective information regarding job demands or patients’ functional abilities The Well-Designed FCE Comprehensive Standardized Yet Flexible Clear Report Format Safe Practical Objective Reliable Valid Comprehensive Covers all physical demands defined by DOL in the Dictionary of Occupational Titles Does not focus exclusively on materials handling Standardized Yet Flexible Procedures Equipment Verbal Instructions Scoring System Ability to chose individual items for job-specific testing A Clear FCE Report Overall level of work (Sedentary, Light, Medium, Heavy, Very Heavy) Percent of day individual demands can be performed (Constantly, Frequently, Occasionally, Never) Tolerance for the 8 hour day FCE Summary Report A Clear FCE Report # of tasks with self-limiting behavior Inconsistencies in performance Interpretations/Conclusions – Major areas of dysfunction – Factors underlying limitations – Discrepancy between job demands & pt abilities If indicated: • Job Specific Testing • Job/Occupation Comparisons • Recommendations Safe Minimize chance of injury during FCE – Heart rate monitor – Allow patient to stop if need arises – Therapist observing body mechanics/alignment – Well-defined safe stopping points – Clear contraindications and precautions Objective Projections Minimize clinical “guesswork” Projecting to 8-hour day The Common FCE Scoring ? t E en FC sm s se As ? ? ? FCE Clinician’s Report Protocol Observation Generation Examiner Bias The “Gray” Zone The PWPE Scoring System Scoring System t E en FC sm s se As Directs Therapists Observations Classification System for Documenting FCE Protocol Formulas for Combining Multiple Observations FCE Report Formulas for Projecting Performance to Generation 8-Hour Day Overall Sincerity of Tolerance Work Level Effort 8 hour Day Rating Rating Rating What is Reliability? Reliability = Consistency • If different therapists administer an FCE to the same patient, will they obtain the same results? What is Validity? Validity = Accuracy • Can the FCE accurately predict a safe maximum level of work? Reliability and validity are critical to trusting FCE results! Why Are Reliability and Validity Important? Without proven reliability and validity, you and the patient do not know if test results are accurate Legal defensibility: Daubert v. Merrill Dow Pharmaceuticals 1993 Supreme Court Ruling If testimony does not meet standards FCE results may be considered inadmissible Reliability and Validity of FCE Smith et al: Am J Occup Ther, 1986 Dusik et al: J Occup Med, 1993 Saunders et al. Physical Therapy, 1997 Alpert et al. J Occup Rehab, 1991 Matheson et al. Spine, 1995 Summary of Research All of these studies made important contributions to the literature However, limitations include: – Many studies focused primarily on the manual materials handling aspect of FCE – Many studies addressed either reliability or validity but not both – Methodological flaws with several of the studies Interrater Reliability and Concurrent Validity Lechner et al: Journal of Occupational Medicine, 1994 Two therapists evaluated the same 50 patients for reliability using a new FCE protocol, Physical Work Performance Evaluation (PWPE) Concurrent validity: PWPE (FCE) predictions were compared to actual work status Reliability & Validity Reliability: Kappa for Test as whole = .83 Almost Perfect 0.9 0.8 0.7 Dynamic Strength 0.6 0.5 0.4 0.3 0.2 0.1 Position Tolerance Mobility Overall Level 0 Kappa Validity: 86% agreement between PWPE and actual work Predictive Validity Lechner, Page, Sheffield: (abstract) Physical Therapy 1996 Study conducted at Baptist Medical Center Montclair, Birmingham, AL 30 Workers Compensation patients who were admitted to a interdisciplinary work hardening program using PWPE (FCE) protocol Compared PWPE recommendations to actual return to work level Predictive Validity Recommendations based on discharge PWPE: • RTW - full duty • RTW - modified duty • No RTW Substantial agreement between recommendations and: • Initial RTW • 3 month follow up • 6 month follow up Kappa of .74 Kappa of .69 Kappa of .71 Contributions of PWPE Research These studies are the only ones that have examined both reliability and validity of a comprehensive test published in the peer-reviewed medical literature Common Misuse of FCE “Can’t Catch the Faker, Why Not? ” Many of the traditional tests used to “catch the faker” have not been adequately researched It is impossible to infer motivation from these tests, in a legally defensible way Clinicians who are marketing their services and making this claim are misrepresenting themselves Sincerity of Effort Any statement that implies decreased motivation “symptom magnification” “exaggerated pain behavior” “invalid or conditionally valid FCE” “malingerer” Sincerity of Effort “Measures” typically used to justify statements about sincerity of effort Coefficient of Variation (CV, COV) Waddell’s Non-Organic Signs (NOS) Bell-shaped curve Rapid exchange grip Correlation of heart rate to pain scores Correlation of pain scale to behavior Correlation of impairment measures (ROM, MMT, etc.) to function “Validity scales” Sincerity of Effort If any of these measures are used to justify accusations of a lack of sincere effort or motivation… Problem: Research supporting the reliability and validity if these protocols for the purpose of detecting sincerity of effort/motivation is lacking…not defensible The Good News We can document self-limiting behavior (stopping before maximum effort is reached) We know the extent of self-limiting behavior in motivated patients We can document inconsistent performance New research-based protocols becoming available that allow us to link inconsistencies with non-compliance We can document atypical performance Sincerity of Effort Test results need to be expressed very carefully “Patient self-limited on…” “Patient demonstrated the following functional inconsistencies” “Patient’s test results were similar to a research group who were instructed to intentionally withhold.” The Challenge To distinguish between appropriate and inappropriate tests of sincerity of effort Not overstate test results and increase exposure to litigation Additional Information Lechner et al. Detecting Sincerity of Effort : A Summary of Methods and Approaches. Physical Therapy, July 1998. Review article: Discusses in detail the problems with commonly utilized methods for evaluating sincerity effort. Additional Information Schapmire et al: Simultaneous Bilateral Testing: Validation of a New Protocol to Detect Insincere Effort During Grip and Pinch Strength Testing. Journal of Hand Therapy, Vol 15, No. 3. Research supporting new sincerity of effort testing. What Is Job Demands Analysis? Job Demands Analysis defines: – essential functions or tasks of the job – physical demands of those functions – percent of day spent performing the physical demands – forces being exerted – environmental conditions – equipment used Difference Between JDA and Hazard Identification JDA – defines the essential physical demands of the job Hazard Identification – identifies physical demands that exceed safe limits Can the two overlap? Yes, one can lead to the other but need to know the employer’s purpose for analysis. How are the Results of Job Demands Analysis Used? ADA job descriptions Pre-Work screening Transitional duty Return-to-work decisions Setting pay rates Matching worker abilities to job demands! The Importance of Job Classification Report the results of JDA by using a classification system defined by the DOL Provide additional information – – – Climbing (stairs & ladder) Reaching (Overhead & forward) Lifting (above vs. below waist) Classification of Job Demands Defined in DOT, SCO, & COJ Classifies manual materials handling demands: – – – – – Very Heavy Heavy Medium Light Sedentary * negligible weight Occasional Frequent (50%) Constant (20%) > 100 lb. 51 - 100 lb. 21 - 50 lb. 11-20 lb. 1 -10 lb. > 50 25 - 50 10 -25 1 - 10 > 20 10 - 20 1 - 10 * * * Classification of Physical Job Demands Non-materials handling demands – – – – – – standing walking sitting reaching crouching stooping – – – – – – kneeling crawling climbing handling fingering balancing Classification of Physical Job Demands Non-materials handling tasks classified according to duration of demand within the work day – Constantly – Frequently – Occasionally – Never 2/3 to the full day 1/3 to 2/3 of day up to 1/3 of day not required Classification of Physical Job Demands Dexterity Demands – classified as an aptitude by the DOT – Rated on a 1 -5 scale 1 = top 10% of population 2 = highest 1/3, exclusive of top 10% 3 = middle 1/3 4 = lowest 1/3, exclusive of bottom 10% 5 = lowest 10% of population Classification of Physical Job Demands Two types of dexterity – Manual: “Ability to move hands easily and skillfully. To work with hands in placing and turning.” – Finger: “Ability to move fingers and manipulate small objects with fingers, rapidly or accurately.” Classification of Physical Job Demands Shortcomings with DOT classification system: – Very general climbing - ? ladder Vs stairs reaching - ? overhead, forward, backward – Categories very broad 1/3 to 2/3 of day 21 - 50 lb. Reliability Pilot studies showed that when therapists perform JDA without a structured format, it was not very reliable Two therapists analyzing the same job had different results REQUIRES STANDARDIZED PROCESS TO ACHIEVE CONSISTENCY AND ACCURACY Basic Steps of Job Analysis Determine the tasks of the job Determine the frequency & duration of each task Determine % day task is performed Observe/videotape the tasks Measure forces and distances Basic Steps of Job Analysis Determine the percent of task each demand is performed Determine the adjusted percent of day each demand is performed by: – multiplying the task % x demand % Sum the adjusted percentages to determine the total percent of day each demand is performed Basic Steps of Job Analysis Translate the % into: – – – – Constantly Frequently Occasionally Never Determine the highest weight/force handled for each type of lift to classify the job Sed to V. Heavy Contents of Report Tasks Environment Tools/equipment Protective equipment Overall level of work Percent of day performing each demand – C,F,O,N Force demands Distance over which forces applied Optional Aspects of Report Comparisons to patient abilities Recommendations for transitional duty Recommendations for post-offer screening Areas for further hazard assessment Selection of these components will depend on what the employer wants. The Functional Foundation Matching the Worker to the Work Pre-Work Screens Return to Work Work Simulation /Conditioning Transitional Modified Duty Job Demands Analysis // Functional Assessment Why Preemployment Screening ? The Promise: Decrease injuries Decrease injury-related expenses Improve productivity Improve profit margin Maximize Effectiveness: One Element of a Comprehensive Program Pre-employment screening Graded work entry Education and training Hazard prevention and control Fitness/wellness Post-injury management Three MUSTS for Preemployment Screening JOB RELATED JOB RELATED JOB RELATED! DOCUMENT DOCUMENT DOCUMENT! FOLLOW-UP FOLLOW-UP FOLLOW-UP! Important Considerations Americans with Disabilities Act (ADA) Test only the essential functions of the job! Optimal Sequence Interview Conditional offer Post-offer/ screen – medical screen – physical abilities testing – drug screening Traps to AVOID! Pre-offer testing Predicting future injury General strength testing Making comparisons to normative data Adverse impact ADA EEOC PROBLEMS with Pre-Offer Tests Safety Issues Cannot perform medical screening Cannot monitor physiological responses to testing PROBLEMS with Pre-Offer Testing As a health care professional, your pre-offer exam may be considered medical just because it was administered by a health professional Predicting Future Injury Consensus among the medico-legal community: Virtually impossible to deny employment based on pre-offer testing that predicts future injury Predicting Injury Based on speculation Applicant perceived as person with a disability Must make reasonable accommodation PROBLEMS! LITIGATION! INSTEAD... DETERMINE WHETHER PHYSICAL ABILITIES MEET JOB DEMANDS AVOID PROBLEMS! AVOID LITIGATION Avoid Causing Adverse Impact Adverse impact –selection rate for any race, sex, or ethnic group less than 80% of rate for the group with the highest selection rate. Example of Adverse Impact Example: – 60% of male applicants pass postoffer screen but only 15% of female applicants pass (.15 /.60 = .25) – Considered adverse impact: the pass rate for women is only 25% of the pass rate for men. General Strength Testing Faculty at Washington University; Dueker JA, Ritchie SM, Knox TJ, Rose SJ in JOM, Jan ‘94: “isokinetic trunk evaluation was of no value in employee selection” General Strength Testing Faculty from the Department of Orthopaedic Surgery, Glasgow, Scotland; Newton M & Waddell G in Spine ‘93: “...inadequate scientific evidence to support the use of iso-machines in pre-employment screening ...or medico legal evaluation.” Litigation Against General Strength Testing 1982 New York City firefighter case – Berkman v. City of New York – physical agility test items defined by Fleisheman – None of women passed, 46% of men did Ruling: “Nothing in the concepts of dynamic strength, gross body equilibrium, stamina, and the like, has such a grounding in observable behavior of they way firefighters operate that one could say with confidence that a person who possesses a high degree of these abilities as opposed to others will perform well on the job.” Traps to AVOID! Comparison to normative database Percentile rankings of physical abilities are useless ! ADA EEOC Compare Abilities to Job Demands After Conditional Offer Abilities match job demands HIRE AND PLACE Compare abilities to job demands After Conditional Offer Abilities do not match job demands – Qualified person with disability reasonable accommodation – Non-disability -do not hire -alternative placement -job modification -applicant remediation Policy for Handling Test Failures Discuss and encourage the company to establish written policy for handling test failures with the employer prior to initiating screening Do not become involved in implementing policy - leave it to the company’s HR department Two Possible Legal Challenges Test items do not reflect relevant physical duties and performance requirements adequately Sample of incumbents tested was not sufficiently large or did not represent the population of workers Job demands analysis and incumbent testing can go a long way toward refuting Steps of the Post-Offer Screening Process Focusing the Post-Offer screening Determine physical demands Customize screening Establish Procedures Test incumbents Modification Implementation The Details of this lecture were provided by: Deborah E. Lechner, PT, MS President, ErgoScience, Inc.