Safety and compliance
TRIR calculator
Total Recordable Incident Rate is the number of OSHA recordable cases you would expect per 100 full-time workers per year. It is the figure most often asked for in prequalification questionnaires and customer audits.
TRIR = (Recordable cases × 200,000) ÷ Total hours worked
From your OSHA 300 log for the period
All employees, excluding holiday, sick and other non-work time
Show the assumptions
- Formula
- TRIR = (Recordable cases × 200,000) ÷ Total hours worked
The 200,000 base is 100 employees working 40 hours a week for 50 weeks. It is what makes the rate comparable between a ten-person shop and a thousand-person plant.
Hours worked means hours actually worked. Including paid leave inflates the denominator and understates your rate, which is the kind of error an auditor finds quickly.
TRIR
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Prefilled with an example. Change any number and the result updates.
How to calculate TRIR
TRIR = (Recordable cases × 200,000) ÷ Total hours worked
The 200,000 base is 100 employees working 40 hours a week for 50 weeks. It is what makes the rate comparable between a ten-person shop and a thousand-person plant.
Worked example
- OSHA recordable cases 4
- Total hours worked 350,000 hrs
TRIR = 2.29
Reading the result
Hours worked means hours actually worked. Including paid leave inflates the denominator and understates your rate, which is the kind of error an auditor finds quickly.
Benchmarks
The Bureau of Labor Statistics publishes recordable rates each year by industry. Compare against your own NAICS code rather than a single national figure. The range across industries is wide enough that the average tells you very little.
TRIR questions
What counts as an OSHA recordable case?
A work-related injury or illness involving death, days away from work, restricted work or job transfer, medical treatment beyond first aid, or loss of consciousness. Certain diagnoses are recordable regardless of treatment. First aid alone is not recordable, and the line between first aid and medical treatment is defined specifically in 29 CFR 1904.
Which hours go in the denominator?
Hours actually worked by all employees, including overtime. Do not include holiday, vacation or sick leave. Contractors are included only where you supervise their day-to-day work, which is a determination worth documenting rather than assuming.
What is the difference between TRIR and DART?
TRIR counts every recordable case. DART counts only those involving days away from work, restricted duty or job transfer, so it is always the lower of the two. Many prequalification systems ask for both, because a low DART against a high TRIR says your incidents are real but not severe.
Related calculators
Log incidents and track corrective actions
UpKeep records the work, the hours and the failures this metric depends on, so TRIR is a report rather than a spreadsheet exercise.