OSHA 300A, filled from your numbers.
Type cases and hours worked. Get the 300A to post Feb 1, plus TRIR and DART.
Days and NAICS (optional)
Year2026 · 38 employees · 79,400 hours
CasesG 0 · H 1 · I 1 · J 2 · total 4
DaysK 9 days away · L 14 restricted
PostFeb 1, 2027 to Apr 30, 2027
E-fileFile 300A by Mar 2, 2027
20–249 employees in an Appendix A industry: file the 300A.
The OSHA 300A in five minutes
The 300A is the year-end summary of your OSHA 300 injury log. Every employer that keeps the log fills one in, even with no cases.
- Add up the log. Count cases by their most serious outcome: deaths (G), days away (H), job transfer or restriction (I), other recordable (J). Add the days (K and L, capped at 180 per case).
- Fill in hours and headcount. The average number of employees and total hours worked by all of them.
- Certify it. A company executive signs it.
- Post it from February 1 to April 30 where workers see notices.
- File it online by March 2 if your size and industry require it.
TRIR and DART
Both rates are per 200,000 hours, about 100 people working full time for a year. TRIR counts every recordable case. DART counts only the cases with days away, restricted work or a job transfer. GCs and owners ask for both when they prequalify you, usually with your EMR.
- Employers with 10 or fewer employees at all times last year, company-wide, don't have to keep OSHA 300 records unless OSHA or BLS asks (29 CFR 1904.1).
- A company executive must certify the 300A (29 CFR 1904.32(b)(3)).
- Keep the 300, 300A and 301 forms for 5 years after the end of the year they cover (29 CFR 1904.33).
- State-plan states can have their own rules; check yours.
Keep the log all year. The 300A fills itself.
Log an injury on the phone the day it happens. Dozer keeps the OSHA 300 log, the 301 forms and the hours, then fills the 300A in January.
- Injuries logged the same day, from the phone
- 300, 301 and 300A kept together
- TRIR and DART all year, not just in January
- A reminder to post Feb 1 and file by Mar 2
LIVE 300A ready to post Feb 1 Photo is an AI-generated stand-in, not a customer site.
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Questions crews ask
When do I post the OSHA 300A?
From February 1 to April 30, where employees can see it, covering the year before. A company executive must certify it first.
Do I have to file the 300A online?
If your establishment had 20 to 249 employees and is in an industry on OSHA's list (construction is), or 250 or more employees in any industry that keeps records, you submit the 300A through OSHA's Injury Tracking Application by March 2. Establishments with 100 or more employees in certain industries also submit the 300 and 301 data.
How do I calculate TRIR?
TRIR = recordable cases × 200,000 ÷ total hours worked. 200,000 is 100 full-time workers for a year. DART uses only the cases with days away, restricted work or a job transfer.
Who doesn't have to keep OSHA 300 logs?
Employers with 10 or fewer employees at all times during the last year, and some low-hazard industries. Construction isn't on the low-hazard list, so a construction company with 11 or more employees keeps the log.
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