Under 29 CFR 1904.41, establishments with 250 or more employees (in industries required to keep OSHA records) and establishments with 20–249 employees in designated industries (Appendix A — including all of construction, most manufacturing, warehousing, trucking, and healthcare) must electronically submit their Form 300A summary through OSHA's Injury Tracking Application by March 2 each year, covering the prior calendar year. Since the 2023 final rule, establishments with 100 or more employees in the higher-hazard Appendix B industries must also submit case-level data from Forms 300 and 301, with company name — data OSHA publishes.
Separately, employers with 10 or fewer employees company-wide all year, or in partially-exempt low-hazard industries, are routinely exempt from keeping the logs at all. This checker walks the establishment-size and industry questions and returns your verdict with the deadline countdown.
Two separate deadlines: the signed 300A summary must be posted at the workplace from February 1 through April 30, and covered establishments must electronically submit it through OSHA's Injury Tracking Application by March 2 — both covering the prior calendar year.
Per establishment: 250+ employees in any industry required to keep OSHA records, or 20–249 employees in a designated industry listed in 29 CFR 1904.41 Appendix A. Establishments with 100+ employees in Appendix B industries must additionally submit case-level 300/301 data.
If you had 10 or fewer employees company-wide at all times during the year, or your industry is on the partially-exempt low-hazard list, you're exempt from routinely keeping the 300/300A/301 forms — but you must still report any fatality within 8 hours and any in-patient hospitalization, amputation, or loss of an eye within 24 hours.