TRIR, DART, and LTIR from your hours worked and OSHA 300 log
| Industry sector | TRC rate (TRIR) | DART rate | Days-away rate |
|---|---|---|---|
| All private industry | 2.3 | 1.4 | 0.8 |
| Manufacturing | 2.7 | 1.7 | 0.8 |
| Construction | 2.2 | 1.3 | 0.9 |
| Transportation & warehousing | 4.4 | 3.5 | 2.1 |
| Warehousing & storage | 4.8 | 4.1 | 1.5 |
| Retail trade | 3.0 | 1.8 | 1.0 |
| Health care & social assistance | 3.4 | 1.7 | 1.1 |
| Wholesale trade | 2.2 | 1.6 | 0.9 |
| Accommodation & food services | 2.6 | 1.2 | 0.8 |
| All industries incl. state & local govt | 2.6 | 1.5 | 0.9 |
Source: BLS Survey of Occupational Injuries and Illnesses, 2024 rates (released January 2026), computed as (N ÷ hours worked) × 200,000. Private industry's 2.3 was the lowest rate in the series since 2003.
OSHA recordkeeping rates exist so a 40-person shop and a 4,000-person plant can be compared on the same scale. Each rate takes a case count from your OSHA 300 log, divides by the total hours all employees actually worked during the year, and multiplies by 200,000, the hours 100 full-timers clock in a year (100 × 40 × 50).
TRIR = recordable cases × 200,000 ÷ hours worked. DART rate = DART cases × 200,000 ÷ hours worked. LTIR = lost-time cases × 200,000 ÷ hours worked. Use actual hours from payroll, including overtime; don't substitute headcount × 2,000 unless you have no choice, because overtime-heavy sites will read better than they are.
Pull three numbers off your 300 log: total recordable cases, the DART subset (days away, restricted activity, or job transfer), and the days-away subset. Enter the year's total hours worked and pick your sector for the benchmark. The "cases allowed" tile shows how many recordables your hours can absorb before you cross the benchmark, which is the number safety committees actually plan around.
A 125-worker manufacturing plant (250,000 hours) records 5 recordable cases, of which 2 involved days away or restriction and 1 kept someone off work entirely. TRIR = 5 × 200,000 ÷ 250,000 = 4.0. DART = 2 × 200,000 ÷ 250,000 = 1.6. LTIR = 1 × 200,000 ÷ 250,000 = 0.8. Against manufacturing's 2024 average of 2.7, the TRIR sits 48% high, while the DART of 1.6 is close to the sector's 1.7, telling you the recordables skew toward less severe cases.
Small sites need to read their rates with care. A 30-employee shop (60,000 hours) that logs 2 recordables lands at 6.67, and a single case lands at 3.33, even though nothing about the safety program changed. One case moves a small site's rate in whole points; that's arithmetic, not a trend.
Below your industry's BLS average is the baseline goal; the private-industry average was 2.3 recordable cases per 100 full-time-equivalent workers in 2024. Anything at 1.0 or lower is strong, and 0 signals only that the denominator was small or cases were genuinely rare. Compare against your own NAICS sector, because a 2.5 in construction (2024 average 2.2) reads very differently than a 2.5 in a semiconductor fab.
All three scale cases per 200,000 hours worked, but they count different cases. TRIR counts every OSHA-recordable case. DART counts the more severe subset: days away from work, restricted duty, or job transfer. LTIR (sometimes called the lost-time or DAFW rate) counts only cases with at least one day away from work. A site can have a middling TRIR and a good DART if most recordables needed nothing more than medical treatment beyond first aid.
Two hundred thousand hours is what 100 full-time workers put in during a year at 40 hours a week for 50 weeks. The formula (cases ÷ hours worked) × 200,000 therefore expresses cases per 100 FTE workers per year, which makes a 40-person shop comparable to a 4,000-person plant.
Under 29 CFR 1904.7, a work-related injury or illness is recordable if it results in death, days away, 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 professional. First aid alone, as defined by OSHA's specific first-aid list, is not recordable. Every recordable case goes on the OSHA 300 log.
The Form 300A annual summary must be certified by a company executive and physically posted at each establishment from February 1 through April 30. Separately, covered establishments must submit data electronically through OSHA's Injury Tracking Application by March 2: establishments with 250+ employees, and those with 20-249 in designated industries, submit the 300A; establishments with 100+ employees in designated high-hazard industries also submit Forms 300 and 301.
Yes. OSHA's Site-Specific Targeting program draws inspection lists from electronically submitted injury data, and high TRIR or DART rates relative to your industry can put an establishment on the list. Submitted rates are also searchable by the public through OSHA's establishment search, which is why many customers and general contractors ask contractors for their TRIR before awarding work.
This calculator is an educational tool, not legal or compliance advice. Recordkeeping obligations depend on your establishment's size, industry, and state plan; the controlling rules are 29 CFR Part 1904 and OSHA's own guidance at osha.gov/recordkeeping, and state-plan states may impose stricter requirements.