Where to Post the OSHA 300A Summary
Post the 300A in each establishment where notices to employees are customarily posted, such as the board with your labor law posters.
Quick answer
Post the 300A in each establishment where notices to employees are customarily posted, such as the board with your labor law posters. It must stay up from February 1 to April 30, and it cannot be altered, defaced, or covered by other material.
Posting is not complete if employees are unlikely to see it.
The rule in plain English
The recordkeeping year is the calendar year. For the 2026 log, the 300A must be reviewed, certified, and posted by February 1, 2027 and stay up through April 30, 2027 (29 CFR 1904.32(b)(6)). Establishments covered by the electronic submission rule send their data to OSHA's Injury Tracking Application (ITA) by March 2, 2027 (29 CFR 1904.41(c)). The regulation sets the date and OSHA has published no weekend rollover; in 2027 it falls on a Tuesday. All year, each recordable case goes on the log within 7 calendar days.
What this looks like in practice
Post the 300A in a conspicuous place where employee notices are usually posted. Deadlines slip when certification waits on data other teams own: payroll hours, headcount, and an executive's calendar. The fix is to plan backward from the posting date, with named owners for hours worked, headcount, the log review, and the signature.
Operations leaders rarely make the recordkeeping call, but they control the schedules, postings, and site managers that make the deadlines work.
The mistake to avoid
Teams keep the certified summary in a folder instead of posting it.
The same certified totals feed the posted 300A, the ITA submission, and the rates leadership sees, so a late correction in one place has to be carried into all three.
Edge cases worth checking
- Remote or low-traffic establishments need a deliberate posting plan.
- In years when March 2 falls on a weekend, submit by the Friday before; neither the regulation nor OSHA provides a next-business-day rollover.
Example
In mid-March a site walk finds the 300A behind a new shift schedule on the break-room board. The HR partner moves it to the front, adds a monthly check to the posting calendar, and photographs it again. The rule is that the summary is visible for the whole period, not just on February 1.
Step by step
- Pick the board employees actually pass.
- Post the certified copy by February 1.
- Check that nothing covers it during the posting period.
- Photograph it and note the dates.
- Take it down after April 30 and file it.
What to keep in the case file:
- Dated notes from the year-end log review
- The certified 300A with the executive's name, title, and date
- A photo or record showing where and when the 300A was posted
- The ITA submission confirmation, if the establishment is covered
Where 300log helps
300log keeps each establishment's 300A current as cases are entered, so January is a review rather than a rebuild, and it exports ITA-ready files per establishment. Workspaces that connect an ITA API token can also authorize auto-filing of 300A data.
For a quick answer without an account, use the free deadline calendar.
Frequently asked questions
Do zero-case establishments have deadlines too?
Yes. If you are required to keep records, you certify and post a 300A with zeros, and covered establishments submit it electronically.
When is the 300A posting deadline for the 2026 log?
Post the certified 300A by February 1, 2027 and keep it up through April 30, 2027.
When is the ITA deadline for 2026 data?
March 2, 2027, for establishments covered by 29 CFR 1904.41. The date comes from the regulation; in 2027 it falls on a Tuesday.
What happens if we miss March 2?
Submit as soon as you can. The ITA accepts prior-year data through December 31, but the submission is late, and failing to submit can be cited.
Sources
Primary regulation and agency guidance this article relies on.
- [1]29 CFR 1904.32: Annual summary certification and postingOccupational Safety and Health Administration · osha.gov(opens in a new tab)
- [2]29 CFR 1904.29: OSHA Forms 300, 300A, and 301Occupational Safety and Health Administration · osha.gov(opens in a new tab)
- [3]29 CFR 1904.35: Employee involvement and access to injury recordsOccupational Safety and Health Administration · osha.gov(opens in a new tab)
Written and reviewed by the 300log Editorial Team. Guidance, not legal advice: confirm edge cases with OSHA or counsel.