Question 1

How to calculate TRIR?

Accepted Answer

Multiply the number of OSHA-recordable incidents by 200,000, then divide by total hours worked by all employees. Formula: TRIR = (Recordable Incidents × 200,000) ÷ Total Hours Worked. The 200,000 represents 100 full-time employees working 40 hours per week for 50 weeks. Use our free calculator above to get instant results with industry benchmark comparisons.

Question 2

How is TRIR calculated?

Accepted Answer

TRIR is calculated using the OSHA standard formula: multiply your total recordable incidents by 200,000, then divide by total employee hours worked in the year. For example, 5 incidents in 300,000 hours gives a TRIR of (5 × 200,000) ÷ 300,000 = 3.33. This means 3.33 recordable incidents per 100 full-time equivalent workers.

Question 3

How do you calculate TRIR?

Accepted Answer

Count all OSHA-recordable workplace injuries and illnesses in a 12-month period, sum the total hours worked by all employees, then apply: TRIR = (Total Recordable Cases × 200,000) ÷ Total Hours Worked. Use our free calculator above for instant results, DART rate calculation, and industry benchmark comparison.

Question 4

How to calculate TRIR by OSHA?

Accepted Answer

OSHA's method uses data from OSHA Form 300. Count all recordable cases (Columns G + H + I + J on Form 300), multiply by 200,000, and divide by total hours worked by all employees during the year. This gives the standard TRIR rate used for OSHA compliance, inspections, and industry benchmarking.

Question 5

How to calculate TRIR rate?

Accepted Answer

TRIR Rate = (Number of Recordable Incidents × 200,000) ÷ Total Hours Worked. The result tells you how many incidents occur per 100 full-time equivalent workers per year. A lower rate indicates better safety performance. For example, 3 incidents with 200,000 hours = TRIR of 3.0.

Question 6

How to calculate TRIR from OSHA 300?

Accepted Answer

Sum the entries in columns G (deaths), H (days away from work), I (job transfer or restriction), and J (other recordable cases) from OSHA Form 300. Multiply this total by 200,000 and divide by total hours worked by all employees. The hours data comes from the totals section of OSHA Form 300A.

Question 7

What is the TRIR calculation formula?

Accepted Answer

TRIR = (Number of OSHA Recordable Incidents × 200,000) ÷ Total Hours Worked. The constant 200,000 standardizes the rate so companies of different sizes can be compared fairly — it equals 100 full-time employees working 40 hours per week for 50 weeks per year.

Question 8

How do you calculate the TRIR rate?

Accepted Answer

(1) Count all recordable incidents from your OSHA 300 log. (2) Total all employee hours worked during the measurement period. (3) Multiply incidents by 200,000. (4) Divide by total hours. Example: 4 incidents and 150,000 hours = (4 × 200,000) ÷ 150,000 = 5.33 TRIR.

Question 9

How to calculate 12 month rolling TRIR?

Accepted Answer

Sum all recordable incidents across the most recent 12 consecutive months and divide by the total hours worked during that same period, multiplied by 200,000. This rolling calculation smooths out seasonal variations and gives a more accurate ongoing safety picture than a single calendar-year snapshot.

Question 10

How to calculate a 3 year average TRIR?

Accepted Answer

Sum all recordable incidents across three consecutive years, sum the total hours worked across those same three years, then apply the formula: TRIR = (Total 3-Year Incidents × 200,000) ÷ Total 3-Year Hours Worked. This provides a longer-term safety trend for strategic planning.

Question 11

How to calculate TRIR and DART?

Accepted Answer

Both use the same base formula but count different incident types. TRIR includes all OSHA-recordable incidents. DART only counts cases involving Days Away from work, Restricted work activity, or job Transfer. DART is always less than or equal to TRIR because it is a subset of recordable incidents.

Question 12

How to calculate TRIR monthly?

Accepted Answer

Count recordable incidents for the specific month, multiply by 200,000, and divide by total hours worked that month. Note that monthly TRIR can be volatile due to small sample sizes. OSHA and BLS typically use annual TRIR. For monthly monitoring, consider using a 12-month rolling average instead.

Question 13

How to calculate quarterly TRIR?

Accepted Answer

Sum recordable incidents over a three-month period, multiply by 200,000, and divide by total hours worked in that quarter. While quarterly TRIR is useful for internal safety tracking, annual TRIR is the standard for OSHA reporting, industry benchmarking, and external communications.

Question 14

What does OSHA TRIR calculation mean?

Accepted Answer

The OSHA TRIR calculation determines how many work-related injuries and illnesses occur per 100 full-time equivalent workers annually. OSHA uses this standardized metric to compare safety performance across companies of different sizes and to identify high-risk workplaces for targeted inspections.

Question 15

How to calculate TRIR safety metric?

Accepted Answer

Collect total OSHA-recordable incidents from Form 300 and total hours worked from Form 300A. Then compute: TRIR = (Recordable Incidents × 200,000) ÷ Total Hours Worked. This is the most widely used safety performance metric in the United States, required for OSHA compliance and commonly requested in contractor pre-qualification.

Question 16

Can TRIR be zero?

Accepted Answer

Yes. If a company has zero recordable incidents in a measurement period, TRIR is 0.0 regardless of hours worked. While a zero TRIR is an excellent achievement demonstrating strong safety culture, it should be verified against thorough and accurate recordkeeping practices.

Question 17

What is a good TRIR?

Accepted Answer

A good TRIR depends on your industry. Below 1.0 is considered excellent across most industries. Between 1.0 and 3.0 is average for many sectors. Above 3.0–4.0 may indicate safety concerns requiring attention. Compare against BLS benchmarks: construction averages 2.2, manufacturing 2.7, healthcare 3.4, while finance averages just 0.3.

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What Is TRIR (Total Recordable Incident Rate)?

How Is TRIR Calculated?

What Is a Good TRIR?

TRIR vs DART vs LTIR

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