Lost-Time Injury Frequency Rates (LTIFR)

Lost-Time Injury Frequency Rates (LTIFR)

Lost-time injury frequency rates are the number of lost-time injuries within a given accounting period relative to the total number of hours worked in the same accounting period. This is calculated as follows and results in a measure of the number of lost-time injuries per hour worked during the accounting period:

The number of lost-time injuries per hour worked is always a very small number. Therefore, for ease of interpretation, a multiplier of 1 million is used and LTIFRs are reported as the number of lost-time injuries per million hours worked. This is calculated as follows:

 

 

Source : http://www.safeworkaustralia.gov.au/sites/swa/statistics/ltifr/pages/lost-time-injury-frequency-rates