Occupational Safety Specialist how-to
How to Calculate a Total Recordable Incident Rate (TRIR)
TRIR lets you compare safety performance across time and companies of different sizes.
TRIR lets you compare safety performance across time and companies of different sizes. In short: count; find; multiply, then complete the remaining steps below.
Step by step
Count the OSHA-recordable injuries and illnesses for the period.
Find total hours worked by all employees for the same period.
Multiply recordables by 200,000 (the hours 100 full-time workers work in a year).
Divide by total hours worked.
Example: 3 recordables × 200,000 ÷ 450,000 hours = 1.33.
Compare with prior periods and published industry averages.
Safety reminders for occupational safety specialists
- Wear the same PPE required for the work areas you inspect
- Stop work when you see imminent danger
- Protect injured workers’ privacy in records and investigations
- Model safe behavior at all times: credibility depends on it
Key terms
OSHA · 29 CFR 1910 / 1926 · Job hazard analysis (JHA) · Hierarchy of controls · OSHA 300 log · Recordable incident: see the full occupational safety specialist glossary.