May 4, 2026 · 1 min read · The RegFile team
The OSHA 300A posting requirement (Feb 1 – Apr 30): a simple checklist
A common surprise: even after you electronically submit your 300A to OSHA, you still have to post it in your workplace. They're two separate requirements. Here's the posting one, kept simple.
The window
Post the 300A summary from February 1 through April 30 every year — three full months — where employees can see it.
What to post
- The 300A summary for the prior calendar year (the totals page), not the detailed 300 log.
- It must be certified by a company executive — an owner, an officer, or the highest-ranking on-site manager — before it goes up.
Where to post it
Somewhere employees actually pass: a break room, a time clock, a notice board. If you have workers who don't report to a single physical location, you provide the summary in a way they can reasonably access.
The quick checklist
- Summary covers the correct prior calendar year
- Totals match your 300 log
- A company executive has certified it
- Posted by February 1
- Stays up through April 30
- A readable copy is kept for your records
A note on the difference
Posting is about your employees seeing the numbers. Electronic submission is about OSHA receiving them. You generally do both, and the deadlines are close together (post by Feb 1, submit by March 2), so it's easy to handle them in one pass.
RegFile prepares and electronically files your 300A; your team prints the certified summary and posts it. If you want to confirm whether you even have to file this year, the checker is free.
This is informational, not legal advice — verify against your adopted rule.