June 25, 2026 · 2 min read · The RegFile team
The 2027 OSHA 300A deadline: dates, who must file, and what happens if you miss it
If you're looking for one date to remember, it's March 2. That's when your OSHA Form 300A — the annual summary of work-related injuries and illnesses — is due to OSHA's Injury Tracking Application (ITA) for the prior calendar year. For 2026 injury data, that means March 2, 2027.
Here's everything that sits around that date, in plain terms.
The dates that matter
- March 2 — the electronic submission deadline. Your 300A for the previous calendar year is due to the ITA.
- February 1 – April 30 — the posting window. Separately from filing, you post the printed 300A summary where employees can see it for these three months.
- Through December 31 — the late window. If you miss March 2, OSHA still accepts the submission through the end of the year. Filing late is far better than not filing — but it can still draw a citation.
Who has to file electronically
Not every business submits a 300A to the ITA. Two groups do:
- Establishments with 250 or more employees that aren't in a partially-exempt industry, and
- Establishments with 20–249 employees in a designated high-hazard industry.
If you're not sure which bucket you're in, or whether your business activity counts as high-hazard, start the filing checker. You don't need an account.
What happens if you miss it
OSHA recordkeeping violations carry a penalty of up to $16,550 per violation (2025 figure, adjusted annually). OSHA also runs a program that emails and cites establishments that skip the electronic submission, using its own public data to find them. So "nobody will notice" isn't a safe bet — the agency is specifically looking.
The practical math is simple: one filing costs a small fraction of a single citation.
How to not think about this again
The deadline is the same every year, which is exactly why it's easy to let slip. The filing checker tells you whether the filing applies, then keeps the next step in one place: draft the 300A from your log, review and authorize, file to the ITA, and keep proof. Next year, we remind you before March 2 and do it again.
This is informational, not legal advice — verify against your adopted rule.