What Does Injury Frequency Rate (IFR) Mean?
An injury frequency rate (IFR) is the number of injuries sustained for every one million employee hours worked. The calculation involves multiplying the number of injuries in a period by one million hours and dividing it by the number of labor hours worked at the company. This metric is designed to demonstrate the probability of how high or low the chances might be of sustaining a reportable injury at work. It is often used by companies as a measure of injury prevention practices.
Injury frequency rate is also referred to as Lost Time Injury Frequency Rate (LTIFR) as well as Accident Frequency Rate (AFR).
Number of injuries x 1Million/number of hours worked = Injury Frequency Rate