Missouri high-hazard filing guide
OSHA 300A for Other support activities for transportation in Missouri
Other support activities for transportation is a designated high-hazard business activity, so a Missouri establishment with as few as 20 employees should check whether it owes an electronic 300A filing. RegFile drafts it from your 300 log and files it for you.
Next deadline
2027-03-02
- Business activity
- Other support activities for transportation
- Checker input
- Business activity + employee count
- Likely threshold
- 20+ employees (high-hazard)
- Post through
- February 1–April 30
- Authority
- 29 CFR 1904.41 (opens in a new tab)
Why this industry
Other support activities for transportation is on OSHA's designated high-hazard list, which lowers the e-filing threshold to 20 employees.
The deadline
Submit by March 2 each year; post the summary February 1–April 30.
If you don't file
Up to $16,550 per violation (2026). Filing with RegFile costs a small fraction of that.
Live filing check
Current result for Other support activities for transportation
Checking the current filing rules for a mid-size business in this state.
Run it with my exact detailsHow it works
From your log to filed.
Tell us what you do
Your state, what your business does, how many people. Plain words — no codes to look up, no forms.
See what's ready for review
One simple list: what's due, when, and why. The next thing due is right at the top.
Tap to handle it
We draft it, you give it a 2-minute look and approve, we file it and keep the proof. Next year, we remind you first.
OSHA 300A questions
Who has to electronically file OSHA Form 300A?
Two groups must submit their 300A to OSHA's Injury Tracking Application: establishments with 250+ employees that aren't in a partially-exempt industry, and establishments with 20–249 employees in a designated high-hazard industry. Not sure which applies to you? The filing checker answers it in about 30 seconds.
When is the OSHA 300A deadline?
The 300A for the prior calendar year is due March 2 every year. If you miss it, OSHA still accepts late submissions through December 31 — but a missed filing can draw a citation, so it's best to file on time.
Do I still have to post the 300A in my workplace?
Yes. Electronic filing doesn't replace posting. You post the summary where employees can see it from February 1 through April 30 each year. RegFile prepares and files the electronic submission; your team posts the printed copy.
What happens if I don't file?
OSHA recordkeeping violations carry a penalty of up to $16,550 per violation (2026 figure), and OSHA runs a program that emails and cites establishments that skip the submission. One filing with RegFile costs a small fraction of a single citation.
Who signs the 300A — do I need a lawyer or a safety professional?
No licensed professional is required. A company executive — an owner, an officer, or the highest-ranking on-site manager — certifies the summary. That's part of why RegFile can handle the whole filing for you: you review and authorize, and we file.
How does RegFile actually file it?
We read your OSHA 300 log, draft the 300A summary, and run it through deterministic checks. You review the draft and authorize it, then we submit it to OSHA's ITA. You get a confirmation and a permanent record of what was filed.
Is RegFile affiliated with OSHA?
No. RegFile is an independent compliance service, not affiliated with OSHA or the U.S. Department of Labor. RegFile output is informational, not legal advice — verify against your adopted rule.
Does it apply to your business?
Check in about 30 seconds — free, no account.