Safety & Workforce worked example

Lost Time Injury Rate with lost-time cases of 1 cases: a worked example

Suppose lost-time cases falls to 1 cases. This page works the full calculation at that level so you can see exactly which result moves and by how much. Calculate LTIR (lost-time injury rate) for Safety & Workforce from lost-time cases and total hours worked, using the OSHA 200,000-hour basis.

The inputs for this scenario

  • Lost-time cases: 1 cases (the input this scenario stresses; the baseline uses 2)
  • Total hours worked: 500,000 hr (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: LTIR = lost-time cases × 200,000 ÷ total hours worked.
  • LTIR works out to 0.4 per 100 workers at these inputs, and this is the headline figure for the scenario.
  • Cases works out to 1 cases at these inputs.
  • Hours worked works out to 500,000 hr at these inputs.
  • Full-time equivalents works out to 250 FTE at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where lost-time cases sits at 2 cases and the headline result is 0.8 per 100 workers, this scenario comes in 50% below the baseline at 0.4 per 100 workers.
  • It computes your lost-time injury rate per 100 full-time workers from lost-time cases and total hours worked. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • LTIR: 0.4 per 100 workers (headline result)
  • Cases: 1 cases
  • Hours worked: 500,000 hr
  • Full-time equivalents: 250 FTE

Run it with your numbers

  • To rerun this with your own numbers, open the live Lost Time Injury Rate calculator, set lost-time cases to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.