Free calculator
Do you keep the OSHA log, and do you file it online?
Two questions decide it: how many people you had, and what industry you're in. Enter your NAICS code and your peak headcount. The checker reads the lists in the rule and tells you which answer applies, with the section behind it.
Also calledOSHA recordkeeping exemption, Who must submit OSHA 300A electronically, OSHA electronic reporting requirements, OSHA partially exempt industries
This follows 29 CFR 1904.1, 1904.2 and 1904.41 and the NAICS lists in the rule, read on eCFR on October 28, 2026. It is a starting point, not legal advice. It gives the routine answer. OSHA can ask any employer for records. PortalBase doesn’t file with OSHA for you.
This does arithmetic on what you type. Nothing leaves your browser. Check the result against your own rules and procedures.
What it checks
- Company size: a company that never had more than 10 employees last year is partially exempt (1904.1).
- Industry: some industries are partially exempt, by NAICS code (1904.2).
- Electronic filing: the 300A for 20 to 249 employees in listed industries, and for 250 or more. The 300 and 301 as well for 100 or more employees in the highest-risk list (1904.41).
- The date: electronic filing is due by March 2 of the year after.
What it doesn't do
- It gives the routine answer. OSHA can ask any employer for records, and a state plan can add its own rules. It isn't legal advice. Check the current text of 29 CFR 1904 for your case.
- The NAICS lists are copied from the rule as it stood on the date shown on the tool. The tool doesn't file anything, and PortalBase doesn't file with OSHA for you. Nothing you type is saved or sent.
Run this in the field.
PortalBase builds the 300, 300A and 301 from your incident reports, and makes the CSV for OSHA's online filing. You review it, and you file it yourself.
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Common questions
- Who has to keep an OSHA 300 log?
- Employers that had more than 10 employees at any time last year, unless the establishment is in a partially exempt industry. Even exempt employers report a work-related death, in-patient hospitalization, amputation or loss of an eye.
- Who has to submit OSHA records electronically?
- Establishments with 250 or more employees that keep records, and establishments with 20 to 249 employees in the listed industries, submit the 300A. Establishments with 100 or more employees in a second list also submit the 300 and 301. The date is March 2.
- Which employees count toward the headcount?
- Each person employed at any time during the year counts as one, including part-time, seasonal and temporary workers. The size test for the log is company-wide. The filing test is by establishment.
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Glossary
OSHA 300 Log
The OSHA 300 Log is the form where an employer lists each recordable work-related injury and illness, one line per case.
Glossary
OSHA 300A Summary
The OSHA 300A Summary is the year-end total of the cases on the 300 Log, certified by a company official and shared with employees.
Glossary
Recordable incident
A recordable incident is a work-related injury or illness that meets OSHA's criteria for the log, such as medical treatment beyond first aid.