Occupational Safety- Safety Statistic Calculations MIGUEL MORALES
1. a) What is the standard number of hours worked by each full-time employee every year?
2080
b) For 100 employees, how many hours will be worked/year, based on this standard?
200,000
OSHA Recordable Incident Rates
2. What is the Equation for OSHA Recordable Incident Rates?
Incidence rate = (Total number of recordable incident) x 200,000 / (Total manhour worked for
one year)
3. Using your company from OSHA Recordkeeping, your company (Family Fun World) has 24 Full-time
employees who worked 48,000 hours last year and 200 part-time employees who worked 200,000
hours. How many TOTAL FTE employees and TOTAL labor hours per year is this?
24 full time employees
Total 248,000 hours
4. According to your OSHA Recordkeeping Worksheet, how many recordable injuries did you have?
6
5. Using the Equation in #2, calculate the IR.
4.83
6. Let’s interpret this number: What is now known is that for every 100 employees, ___4.83___
employees have been involved in a recordable injury or illness. (Plug in your answer from #5)
Lost Time Case Rate (LTC)
1. What is the Equation for Lost Time Case Rate?
Number of lost time cases x 200,000)/total number of hours worked by employees
2. According to your OSHA Recordkeeping Worksheet, how many cases of lost work time did you have?
6 days
3. Using the Equation in #2, calculate the LTC Rate.
4.84
4. Let’s interpret this number: What is now known is that for every 100 employees, _4.84_____
employees have suffered lost work time because of a recordable injury or illness. (Plug in your answer
from #3)
Severity Rate (SR)
1. What is the Equation for Severity Rate?
Severity rate= days lost in a year due to accidents/number of man-hours worked x 1,000,000
2. According to your OSHA Recordkeeping Worksheet, how many lost workdays and recordable
incidents did you have?
10 lost days and six recordable injuries
3. Using the Equation in #2, calculate the Severity Rate.
0.04
4. Let’s interpret this number: What is now known is that for every recordable incident, an average of
_0.04_____ days will be lost. (Plug in your answer from #3)
DART Rate (Days Away/Restricted or Job Transfer Rate)
1. What is the Equation for DART Rate?
Total number of recordable injuries and illnesses that caused a worker to be away, restricted, or
transferred x 200,000) / Total number of hours worked by all employees
2. According to your OSHA Recordkeeping Worksheet, how many DART Incidents did you have?
5
3. Using the Equation in #2, calculate the LTC Rate.
4.03
4. Let’s interpret this number: What is now known is that for every 100 employees, __4.03____
incidents resulted in lost or restricted workdays or job transfer due to a recordable injury or illness. (Plug
in your answer from #3)