An OSHA incident rate can be calculated using the following formula: (Number of injuries and illnesses X 200,000) / Employee hours worked = Incidence rate. The 200,000 figure in the formula represents the number of hours 100 employees working 40 hours per week, 50 weeks per year would work...
The incidence rate can be calculated for the entire establishment and for each department. This procedure allows comparison between and within the same departments from year to year. Lost Work Day Injury and Illness rate (LWDII) = (Number of cases)*(200,000)/Total population at risk in a ...