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What is TRIR (total recordable incident rate)?

TRIR is the number of recordable injuries and illnesses a company had for every 100 full-time workers in a year, so that companies of different sizes can be compared.

Also called total recordable incident rate, incidence rate

What it means.

TRIR is industry shorthand. The Bureau of Labor Statistics calls the calculation an incidence rate and publishes the formula: number of injuries and illnesses times 200,000, divided by employee hours worked. The 200,000 hours stands for 100 employees working 40 hours a week for 50 weeks a year.

For TRIR the count is every recordable case on the year's OSHA 300 log. The same formula using only the cases with days away from work or job transfer or restriction (columns H and I of the log) gives the DART rate. TRIR is a lagging measure: it does not count near misses or open corrective actions, and a low number can mean a safe year or a year when cases were not reported.

(Number of injuries and illnesses X 200,000) / Employee hours worked = Incidence rate

Bureau of Labor Statistics, How To Compute Your Firm's Incidence Rate for Safety ManagementU.S. Bureau of Labor Statistics. Read 22 October 2026.

Where it shows up on a job.

A contractor with 3 recordable cases and 150,000 hours worked in a year has a TRIR of 3 x 200,000 / 150,000 = 4.0. With 600,000 hours and the same 3 cases, it would be 1.0.

Where this comes from.

Each source was read on 22 October 2026. Guidance is advice; a regulation is the rule.

A plain-language definition, not legal advice. For a decision on your site, read the standard that applies to it.

  • recordable injury or illness

    A recordable injury or illness is a work-related case serious enough, under OSHA's recordkeeping tests, that it must be entered on the OSHA 300 log.

  • OSHA 300 log

    The OSHA 300 log is the employer's record, for each year, of the work-related injuries and illnesses that OSHA's recordkeeping rule says must be recorded.

  • contractor prequalification

    Contractor prequalification is checking a contractor's safety record, insurance, training and written programs before they are allowed to start work on your site.

  • near miss

    A near miss is an event that could have hurt someone and did not, often by luck; OSHA also calls it a close call.

In PanoraCompliance Ready (beta): A four-year scorecard with TRIR, DART and LTIR from your own records, on a 200,000-hour base.

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