OSHA 300A Posting and Certification: Who Signs and When
The Form 300A summary is the one OSHA form employees see. Every establishment that keeps the log must complete it after the year ends — even with no recordable cases (1904.32(b)(2)).
Who certifies
A company executive must certify that they examined the 300 log and reasonably believe the summary is correct and complete (1904.32(b)(3)). That means an owner of a sole proprietorship or partnership, an officer of the corporation, the highest ranking company official working at the establishment, or that person's immediate supervisor (1904.32(b)(4)). A safety manager can prepare it; the right executive signs.
Where and when to post
Post a copy in each establishment where employee notices are customarily posted, not altered, defaced or covered, from February 1 until April 30 (1904.32(b)(5)–(6)).
Zero-injury years
Enter zeros in the totals and post it anyway. If the establishment must submit electronically, the ITA file says “no injuries or illnesses” with a 2 in the no_injuries_illnesses column — Safetally's “No injuries this year?” button sets that up.
The yearly calendar
- Within 7 calendar days of learning about a recordable case: enter it on the 300 log and fill in a 301 (1904.29(b)(3)).
- By February 1: post the certified 300A where employee notices go, and keep it up until April 30 (1904.32(b)(6)).
- By March 2: submit the 300A — and, for establishments that must, 300 and 301 case data — through OSHA's Injury Tracking Application (1904.41(c)).
- Keep for 5 years after the end of the year the records cover (1904.33).
Last reviewed 2026-10-27. General information, not legal advice — 29 CFR Part 1904 and OSHA's own guidance decide what applies.