Lost time injury frequency rate (LTIFR)
Formula
Lost time injury frequency rate (LTIFR)
LTIFR = (Number of lost time injuries × 10,00,000) ÷ Total person-hours worked
Variables
| Lost time injuries | Work-related injuries that caused the injured person to miss at least one shift or day after the day of the injury |
| Total person-hours worked | All hours worked by the group being measured (employees or workers) in the year |
| 10,00,000 | Scales the result to one million person-hours, as used in the BRSR |
Finding the inputs
The BRSR reports LTIFR directly in Principle 3, separately for employees and workers, and it is a BRSR Core indicator. Person-hours are rarely disclosed, so recalculating from scratch is usually not possible; compare the reported rates.
Reading the number
Lower is better. Compare employees with employees and workers with workers, and peers in the same sector. Read it together with fatalities: a low LTIFR alongside deaths suggests minor injuries may be under-reported. Check whether contractors are included.
Illustrative example
From the research
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