A TRIR only means something next to your industry's average — this calculator computes your rate from 300A totals and benchmarks it against official 2024 BLS data for your NAICS industry. Not sure whether a case even belongs on your log? Screen it with the recordable injury checker first, then browse all our free safety tools.
Is your TRIR good for your industry?
Short answer: enter your total recordable cases, DART cases and hours worked; the tool computes TRIR = cases × 200,000 ÷ hours and compares both rates against the 2024 BLS average for your industry. For context, U.S. private industry overall ran a total recordable cases (TRC) rate of 2.3 and a DART rate of 1.4 per 100 full-time workers in 2024 — a rate below your own industry's line is favorable benchmark context — it does not by itself establish safety performance or compliance, and no universal "good" number exists.
This free calculator turns your OSHA 300A summary totals into a TRIR (total recordable incident rate) and a DART rate, then benchmarks both against the U.S. Bureau of Labor Statistics Survey of Occupational Injuries and Illnesses, 2024 reference year, Table 1 — the same per-100-full-time-worker basis OSHA and insurers use. The 1,059 Table 1 rows with at least one usable published rate are transcribed into this page (2017 NAICS; four fully suppressed rows are omitted, and footnote markers are removed); nothing is fetched and nothing is estimated.
| Your rate | Industry avg (BLS 2024) | Difference | Standing | |
|---|---|---|---|---|
| TRIR / TRC | — | — | — |
— |
| DART rate | — | — | — |
— |
Secondary context appears here after you calculate: U.S. private industry overall ran TRC 2.3 / DART 1.4 in 2024.
Two things limit precision here. BLS rates are rounded survey estimates with sampling error — where BLS publishes a relative standard error (Table A-1, 2024), the tool shows the approximate interval around the survey estimate (rate ± 1.96 × standard error; endpoints are limited by BLS’s one-decimal rounding). And your own rate swings with every discrete case, which this comparison does not model. The verdicts are descriptive benchmark context, not a statistical test of whether your establishment differs from its industry. Where BLS publishes no RSE, WC Safety’s ±10% descriptive bands apply — neither is an OSHA or BLS threshold. Industry averages combine establishments of all sizes; benchmarks use the 2017 NAICS structure of BLS Table 1.
TRIR & DART benchmark report
Generated: — · wcsafety.com/pages/trir-dart-calculator
Inputs: —
Computed rates: —
Industry benchmark: — Source: BLS Survey of Occupational Injuries and Illnesses, 2024, Table 1.
U.S. context: —
Comparison: —
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Benchmark headroom. —
BLS benchmark rates are rounded survey estimates (2017 NAICS). The interval shown is the approximate confidence interval around the BLS survey estimate (Table A-1 RSE) — descriptive context, not a statistical test of this establishment; the employer’s own rate also varies with each discrete case. Where no RSE is published, WC Safety’s ±10% descriptive bands apply. Industry averages combine establishments of all sizes.
Screening result only. This comparison is an educational benchmark against published BLS averages — not a compliance finding, an insurance rating, or a legal determination.
How this tool works
OSHA incidence rates normalize injury counts to a common exposure base so a 12-person shop and a 4,000-person plant can be compared: rate = (number of cases × 200,000) ÷ total hours worked. The 200,000-hour constant represents 100 full-time employees working 40 hours a week, 50 weeks a year. Your TRIR uses total recordable cases from the 300A summary; your DART rate uses only the cases involving days away from work, restricted work activity, or job transfer. The tool computes both to two decimals and compares them against the matching industry row from BLS Table 1 (published to one decimal), flagging your standing as below average (more than 10% under), near average (within ±10%), or above average (more than 10% over).
| Source | What it provides | Date |
|---|---|---|
| BLS Survey of Occupational Injuries and Illnesses (SOII), Table 1 | Incidence rates of nonfatal occupational injuries and illnesses per 100 full-time workers, by industry and ownership — the 1,059 benchmark rows embedded in this page; paired with Table A-1 relative standard errors (retrieved 2026-08-14) for the estimated-range comparison | 2024 reference year, released Nov 2025; downloaded from bls.gov 2026-08-13 |
| OSHA recordkeeping rule, 29 CFR Part 1904 | Definitions behind every input: recordable case (1904.7), covered employees (1904.31), and the 300A annual summary totals (1904.32) | eCFR, current as of 2026-08-11 |
BLS collects SOII data using OSHA's own Part 1904 definitions, so your 300A numbers and the benchmark are measuring the same thing. BLS publishes rates for private industry plus state and local government rows for select industries; where a row lacks a published DART value, the tool says so instead of guessing.
Worked example
A contractor logged 3 recordable cases, of which 2 were DART cases, across 250,000 hours worked:
- TRIR = 3 × 200,000 ÷ 250,000 = 600,000 ÷ 250,000 = 2.40
- DART rate = 2 × 200,000 ÷ 250,000 = 400,000 ÷ 250,000 = 1.60
Benchmark row — Construction (NAICS 23, private industry), BLS 2024: TRC 2.2, DART 1.3. The comparison: 2.40 ÷ 2.2 ≈ 1.09, about 9% above the industry average on TRIR (within the ±10% "near average" band); 1.60 ÷ 1.3 ≈ 1.23, about 23% above average on DART — the standing the tool would flag.
What every input means
Recordable case — a work-related injury or illness that meets at least one Part 1904 criterion: death, days away from work, restricted work or job transfer, medical treatment beyond first aid, loss of consciousness, or a significant injury or illness diagnosed by a physician or other licensed health care professional (29 CFR 1904.7). It is the sum of the four case-count totals on your 300A (deaths + days-away cases + job transfer/restriction cases + other recordable cases — columns G, H, I and J). Unsure about a specific case? Screen it with our recordable injury checker.
DART case — the subset of recordable cases involving Days Away, Restricted work, or job Transfer. On the 300A these are the days-away column plus the job transfer/restriction column.
Total hours worked — hours actually worked by all employees covered by your 300 Log for the year (29 CFR 1904.32 requires this total on the 300A). Per OSHA's 300A form instructions, count actual hours and exclude paid leave hours such as vacation, sick leave and holidays. The optional estimator (average employee count × 2,000 hours) is a stand-in only.
The 200,000-hour basis — 100 full-time equivalent workers × 40 hours × 50 weeks. Multiplying by it expresses your count as "cases per 100 FTE per year."
TRC vs TRIR — BLS labels its benchmark the "total recordable cases" (TRC) incidence rate; industry shorthand for the identical formula applied to your own establishment is TRIR. Same math, same definitions — directly comparable.
NAICS — the North American Industry Classification System code that identifies your industry (Construction is 23; deeper codes are more specific). It appears on many insurance and tax documents; the search box accepts either the code or the industry name.
Limitations
- BLS rates are surveyed averages from an establishment sample — your true peer group may differ from the published row.
- The survey excludes self-employed workers, farms with fewer than 11 employees, and federal agencies; state and local government rows exist only for select industries.
- Small denominators swing hard: under roughly 20,000 hours (≈10 full-time workers), one case moves the rate by 10 or more points, so single-year rates for small employers are volatile. The tool flags this automatically.
- TRIR is not an EMR — the workers' comp experience modification rate is an insurance calculation on different inputs.
- Benchmarks lag about 11 months: 2024 reference-year data was released in November 2025.
- The comparison is a screening aid, not a compliance, legal, or insurance determination.
Educational screening tool only. TRIR and DART comparisons contextualize your 300A totals against published BLS averages — they are not a compliance finding, an insurance rating, or legal advice. Recordkeeping decisions and rate interpretation belong to the employer and, where unclear, a qualified professional. Sources: BLS Survey of Occupational Injuries and Illnesses, 2024, Table 1; OSHA 29 CFR Part 1904.
Cite or link this tool
TRIR & DART Benchmark Calculator — WC Safety. Benchmark data: U.S. Bureau of Labor Statistics, Survey of Occupational Injuries and Illnesses, 2024, Table 1. https://wcsafety.com/pages/trir-dart-calculatorLinking is welcome. Safety trainers, EHS teams and journalists may link to https://wcsafety.com/pages/trir-dart-calculator or quote computed comparisons with attribution — no permission needed.
Frequently asked questions
What counts as an OSHA recordable case?
A work-related injury or illness that results in death, days away from work, restricted work or job transfer, medical treatment beyond first aid, loss of consciousness, or a significant diagnosis by a physician or other licensed health care professional (29 CFR 1904.7). Our recordable injury checker walks the full decision tree, including the special cases.
Is TRIR the same as DART?
No — they are companion rates on the same 200,000-hour formula. TRIR counts every recordable case; the DART rate counts only the more severe subset involving days away, restriction, or transfer. A high TRIR with a low DART rate suggests many minor cases; a DART rate close to your TRIR means most of your cases are serious.
Which hours count as "hours worked"?
Hours actually worked by all employees covered by your 300 Log — including part-time, seasonal and temporary workers you supervise day-to-day (29 CFR 1904.31). Per OSHA's 300A form instructions, exclude paid non-work hours such as vacation, sick leave and holidays.
Why multiply by 200,000?
200,000 hours is the standard exposure base: 100 full-time workers × 40 hours × 50 weeks. It converts a raw case count into "cases per 100 full-time workers per year," which is what makes employers of different sizes comparable.
What is a "good" TRIR?
Honestly: one below your own industry's average. There is no universal pass mark. U.S. private industry overall ran a TRC rate of 2.3 in 2024, but published industry averages in the embedded BLS table range from under 1 to over 8 — a 2.5 is excellent in nursing care and poor in software. Benchmark against your NAICS row, and watch your trend across years.
Do BLS and OSHA use the same definitions?
Yes. The BLS Survey of Occupational Injuries and Illnesses collects establishment data using OSHA's Part 1904 recordkeeping definitions, so the benchmark and your 300A totals are counted the same way. That is what makes this an apples-to-apples comparison.
Built and reviewed by Steven Eaton, WC Safety. We curate and review industrial PPE against ANSI, NIOSH and OSHA standards. Figures reflect the 2024 BLS Survey of Occupational Injuries and Illnesses and OSHA Part 1904 definitions, provided for educational use.
Our methodology
The calculator applies OSHA's 200,000-hour incidence-rate formula to your 300A totals and benchmarks the result against the BLS Survey of Occupational Injuries and Illnesses, Table 1 (2024 reference year, released November 2025), with every Table 1 row carrying a usable published rate transcribed into the page (rows whose rates are entirely suppressed are omitted) — no lookups, no estimates. Authoritative recordkeeping duties live at OSHA recordkeeping and the survey data at BLS. We hold no safety certification, and this tool is not a substitute for professional judgment.
Why trust this page
WC Safety is an independent review site with no products of its own — nothing here is stocked, warehoused or shipped by us. Purchase links go to Amazon and earn an affiliate commission at no extra cost to you. This free tool is informational — it supports, and never replaces, a written program, a hazard assessment, or evaluation by a qualified safety professional.
Researched and written by Steven Eaton, editor of WC Safety. Steven holds no safety certification; this page implements published government data and rules — the BLS Survey of Occupational Injuries and Illnesses, Table 1 (2024 reference year, downloaded from bls.gov August 13, 2026) and OSHA's recordkeeping rule at 29 CFR Part 1904 (eCFR, current as of August 11, 2026). Last reviewed August 2026.