⏱️ Severity Rate Calculator

How serious your injuries are — days lost per million hours worked.

Total days lost (to injury, the period)

Total hours worked (all employees, the period)

Multiplier (exposure base)

Severity Rate

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Severity Rate = (Total days lost × multiplier) ÷ total hours worked. Read it alongside frequency (LTIFR): a low frequency but high severity means fewer but more serious injuries — a different problem to solve.