OSHA 300A posting and electronic submission dates.

The two OSHA 300A deadlines

At the end of each calendar year an employer who must keep OSHA injury and illness records has to review the OSHA 300 Log for completeness, create the annual summary from it, certify the summary and post it (29 CFR 1904.32(a)). The summary is Form 300A. Section 1904.32(b)(6) answers the timing question directly: you must post the summary no later than February 1 of the year following the year covered by the records and keep the posting in place until April 30. The summary goes in each establishment in a conspicuous place where notices to employees are customarily posted, and it must not be altered, defaced or covered (1904.32(b)(5)).

The second deadline is electronic. Under 1904.41(c), establishments that must submit information must do so by March 2 of the year after the calendar year covered by the form, and the regulation gives an example of March 2, 2024, for forms covering 2023. The date is written as a fixed calendar date, so this page shows the weekday for convenience but does not move it; if you need relief for a weekend date, ask OSHA directly rather than relying on this page.

Who has to submit electronically

Section 1904.41(a) names three groups. First, an establishment with 20 to 249 employees at any time in the previous year that is classified in an industry listed in appendix A to subpart E must submit information from Form 300A. Second, an establishment with 250 or more employees at any time in the previous year that Part 1904 requires to keep records must submit information from Form 300A. Third, an establishment with 100 or more employees in an industry listed in appendix B to subpart E must also submit information from Forms 300 and 301, in addition to Form 300A. Everyone else submits only if OSHA notifies them for an individual data collection (1904.41(a)(3)). Each submission must include the establishment’s Employer Identification Number (1904.41(a)(4)).

Each person employed at the establishment at any time in the calendar year counts as one employee, including full-time, part-time, seasonal and temporary workers (1904.41(b)(2)). That is why the form above asks for the peak headcount rather than an average. The industry lists are tables of NAICS codes in the regulation itself; look up your six-digit NAICS code there before ticking the boxes.

Certification and who signs

A company executive must certify that he or she has examined the OSHA 300 Log and reasonably believes, based on knowledge of the process by which the information was recorded, that the annual summary is correct and complete (1904.32(b)(3)). The executive must be an owner of the company (only if it is a sole proprietorship or partnership), an officer of the corporation, the highest ranking company official working at the establishment, or that official’s immediate supervisor (1904.32(b)(4)). If you had no recordable cases, you still complete the summary and enter zeros in each column total (1904.32(b)(2)(i)).

Worked example

A machine shop with 85 employees at its peak in 2026 is in an appendix A industry. It must post its Form 300A by February 1, 2027, leave it up through April 30, 2027, and submit the Form 300A data electronically by March 2, 2027. A distribution centre with 140 employees in an appendix B industry has the same posting dates and must submit Form 300A plus Form 300 and 301 data by March 2, 2027. A 12-person office in a listed industry posts the summary if it must keep records, but it is below the 20-employee floor and files only if OSHA notifies it.

Limits of this page

We read the regulation text and not OSHA’s submission website, so we do not explain how to file. Partially exempt industries, state-plan variations and your own NAICS classification all affect the answer, and we do not look up NAICS codes. Check the appendix A and B tables in the eCFR and OSHA’s recordkeeping pages. This is general information, not legal advice.

Sources

Sources opened and read November 2, 2026.

• 29 CFR 1904.32, Annual summary (eCFR, current text, read November 2, 2026)
• 29 CFR 1904.41, Electronic submission of Employer Identification Number (EIN) and injury and illness records to OSHA (eCFR, current text, read November 2, 2026)