TRIR Calculator

TRIR (Total Recordable Incident Rate) is an OSHA metric for measuring the safety of a company. This guide will explain how to calculate TRIR.

number of incidents The total number of OSHA recordable incidents in a given year.
number of hours The total number of hours worked by all employees within a given year.

TRIR Calculator

The number of OSHA recordable incidents in a given year.
The total hours all employees worked in the given year.
Compared to
U.S. Average, 3.1
You, 0

Your score of 0 is perfect.

What is TRIR?

  • TRIR stands for Total Recordable Incident Rate.
  • TRIR represents how often your employees are injured.
  • TRIR is typically in the range of 0-10 where lower is better. 3.1 is average. 0 is perfect.
  • Groups like OSHA, ISNet, or insurance providers use TRIR as a quick determination of how safe your company is compared to others in your industry.
“Say your TRIR is 4. That means you have 4 injuries per 100 employees every year.”

How To Calculate TRIR

The formula for TRIR requires you to collect two numbers. Incidents - the number of recordable incidents within a given year. Hours - the number of hours worked in a given year. Once you've gathered these numbers, the formula is easy.

Multiply Incidents * 200,000, then divide by Hours. Or enter your numbers in the calculator above for an instant calculation along with a comparison with industries averages.

Why 200,000? 200,000 is the total number of hours that 100 employees would work, assuming 50 weeks at 40 hours-per-week.

TRIR Formula

Step 1) Count Incidents

Count the number of OSHA recordable incidents within the given year. For details, visit

A work-related injury or illness must be recorded under the Occupational Safety and Health (OSH) Act if it results in one or more of the following:

  • Death.
  • Days away from work.
  • Restricted work or transfer to another job.
  • Medical treatment beyond first aid.
  • Loss of consciousness.
  • A significant injury or illness diagnosed by a physician or other licensed health care professional.

Step 2) Count Hours

Count the number of hours that your employees have worked within the given year. For example, if you have 5 employees working 40 hours per-week for 50 weeks, that's 5 * 40 * 50 = 1000 hours.

Step 3) Do The Math

Multiply Incidents * 200,000. Then divide by Hours. TRIR typically comes out between 0-10.

How To Calculate TRIR

What is a good TRIR?

The perfect TRIR is 0. Lower is always better. Overall, 3.1 is the average TRIR across all industries in the United States. *

A 'good' TRIR depends on your industry. For example, 2 may be good for a construction company, but terrible for a call center. This is because construction work is inherently dangerous but answering phone calls is not. Keep in mind that TRIR is a blanket average of incident rates but does not take into account severity or other factors. TRIR is typically lower for smaller companies of 1-10 employees compared to larger companies. The 2017 industry averages are listed below. Among those numbers, the highest reported average is a TRIR of 10 for "Motor home manufacturing" and the lowest reported average is a TRIR of 1 for "Air and gas compressor manufacturing".

Average TRIR Scores

Here are the industry average TRIR scores for all workforce sizes: (2017, Bureau of Labor Statistics)

  • Abrasive product manufacturing (NAICS 327910), 3
  • Accommodation (NAICS 721000), 4
  • Accommodation and food services, 3
  • Adhesive manufacturing (NAICS 325520), 2
  • Administrative and support services (NAICS 561000), 2
  • Aerospace product and parts manufacturing (NAICS 336400), 2
  • Aerospace product and parts manufacturing (NAICS 336410), 2
  • Agents and managers for artists, athletes, entertainers, and other public figures (NAICS 711400), 3
  • Agricultural implement manufacturing (NAICS 333110), 4
  • Agriculture, construction, and mining machinery manufacturing (NAICS 333100), 3
  • Agriculture, forestry, fishing and hunting, 5
  • Air and gas compressor manufacturing (NAICS 333912), 1
  • Air transportation (NAICS 481000), 6
  • Air-conditioning and warm air heating equip and commercial and industrial refrigeration equip manufacturing (NAICS 333415), 3
  • Aircraft engine and engine parts manufacturing (NAICS 336412), 1
  • Aircraft manufacturing (NAICS 336411), 2
  • All industries including state and local government, 3
  • All other ambulatory health care services (NAICS 621990), 4
  • All other amusement and recreation industries (NAICS 713990), 3
  • All other basic organic chemical manufacturing (NAICS 325199), 1
  • All other chemical product and preparation manufacturing (NAICS 325990), 2
  • All other converted paper product manufacturing (NAICS 322299), 3
  • All other electrical equipment and component manufacturing (NAICS 335990), 2
  • All other fabricated metal product manufacturing (NAICS 332990), 4
  • All other food manufacturing (NAICS 311990), 5
  • All other general merchandise stores (NAICS 452990), 3
  • All other general purpose machinery manufacturing (NAICS 333990), 2
  • All other leather good and allied product manufacturing (NAICS 316998), 2
  • All other miscellaneous chemical product and preparation manufacturing (NAICS 325998), 2
  • All other miscellaneous fabricated metal product manufacturing (NAICS 332999), 6
  • All other miscellaneous food manufacturing (NAICS 311999), 4
  • All other miscellaneous general purpose machinery manufacturing (NAICS 333999), 2
  • All other miscellaneous manufacturing (NAICS 339990), 4
  • All other miscellaneous manufacturing (NAICS 339999), 3
  • All other miscellaneous nonmetallic mineral product manufacturing (NAICS 327999), 3
  • All other miscellaneous wood product manufacturing (NAICS 321999), 5
  • All other nonmetallic mineral mining (NAICS 212399), 1
  • All other nonmetallic mineral product manufacturing (NAICS 327990), 4
  • All other personal services (NAICS 812990), 1
  • All other petroleum and coal products manufacturing (NAICS 324199), 3
  • All other plastics product manufacturing (NAICS 326199), 3
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TRIR By Company Size

How To Lower Your TRIR

Take a glance at the average TRIR rates by company size. Mid-sized companies have the worst scores. Why?

With small companies, communication is easy. Information flows with ease, new hires are carefully vetted, and it takes minimal effort to ensure the team is following best practices.

As a company grows, communication breaks down. New hires miss out on important information, turnover increases, and information struggles to flow through the layers of hierarchy and locations. Manual processes that used to work are beginning to fail.

Eventually a company grows large enough that it couldn't possibly function without streamlined processes. Automation is put in place, and once again data flows to the correct people, status reports automatically assign and track incomplete tasks, information is archived for easy access, and new-hires are on-boarded through carefully designed processes.

“Through immediate response times to issues and observations, and our focus on leading indicators, we have seen a 75% reduction in our TRIR.”
- Fortis Energy
Recipient of the 2019 Excellence in Safety Award, North Dakota Petroleum Council

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