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CALCULATOR

OSHA INJURY AND/OR ILLNESS INCIDENCE RATES

Links to other OSHA based resouces
OSHA Incident Rate Calculations (PDF)

Workplace Accident Prevention
Accident Investigation

Injury & Illness Plan
Accident Prevention Plan Elements for Construction (Doc)

1. Determine the total number of hours worked and from your OSHA Recordkeeping logs determine the number of injuries and/or illnesses.

NOTE:  Employee hours must reflect all full-time and part-time workers, including seasonal, temporary (including temporary contract workers if supervised by company personnel), administrative, supervisory, clerical, and overtime.

 

2. Calculate Injury/Illness Rates

  Enter
           N =    Number of Recordable Injuries and/or Illnesses in One Year 
         EH =    Total Number of Hours Worked by all Employees in One Year
200,000 = Equivalent of 100 Full-Time Employees Working 40 Hour Weeks
                 50 Weeks Per Year
Incidence Rates are calculated 


(N/EH) x 200,000 =
  Result
Total Incidence Rate per year

Calculate OSHA Injury and Illness Rate


3.  Calculate Lost Workday Incidence Rates

 
Enter
    LWD =     Number of  Injuries and/or Illnesses Resulting in Lost Workdays 
                   or Restricted Work Activity 
      EH =     Total Number of Hours Worked by all Employees in One Year  
LWDI Rate =            #LWD cases  x  200,000      =
                                #Employee Hours Worked
Result
Lost Workday Incidence Rate per year

Calculate Lost Work Days

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