The 300log library
Plain answers on the 300 Log, 300A and 301, recordability, DART and ITA electronic submission. Every guide points to the part of 29 CFR 1904 it relies on.
154 guides20 topicsUpdated
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01The OSHA 300 logs each recordable case, the 301 documents each case in detail, and the 300A totals the year for certification and posting.
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02A work-related case is recordable if it leads to days away, restricted work, medical treatment beyond first aid, loss of consciousness…
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03Plan 2027 posting and electronic filing for 2026 records, check establishment eligibility, and assign review and submission owners.
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Every topic page explains the section of 29 CFR 1904 behind it, then lists its guides.
Recordability22
Electronic submission18Forms 300, 300A & 30112
Work-relatedness12
Covered employees9
DART & day counts9Deadlines9
Severe injury reporting8
Employee access7
Retention & updates7
Scope & exemptions6
Audits & quality5
Incidence rates5
Multiple establishments5
Privacy cases5
Software5
300A certification4
AI & terminology3
Filing FAQs1
Penalties1All guides
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154 guides
These are the OSHA recordkeeping terms safety, HR, and finance teams use most, defined in plain language with the rule each one comes from.
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Construction employers keep a log for each establishment, usually the office that runs the work, plus a separate log for any project expected to last a year…
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Nonprofit status does not exempt an employer from OSHA recordkeeping; the same size and industry tests apply, and paid staff are covered employees.
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Manufacturing is on Appendix A, so every plant with 20 or more employees submits its 300A, and many with 100 or more submit case data too.
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Full- and limited-service restaurants (NAICS 7221 and 7222) are partially exempt from routine OSHA logs; caterers and contract food service (7223) are not.
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Warehousing (NAICS 4931) is on both ITA appendices: 20+ employees means a 300A submission, and 100+ adds 300 and 301 case data.
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Whether a clinic keeps OSHA logs depends on its NAICS code: physician, dental, and outpatient offices (6211 to 6215) are partially exempt…
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A work-related skin disorder, such as contact dermatitis, is recordable when it meets a general criterion, typically prescription creams or days away.
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Mental illness, including stress-related conditions, is not work-related unless the employee voluntarily provides an opinion from a qualified professional…
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A late report does not change recordability: evaluate the case when you receive the information, and record it within 7 calendar days of learning…
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Post-accident drug testing isn't banned, but testing used to deter or punish injury reporting, rather than for a real safety reason, can violate 1904.35.
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A near miss has no injury or illness, so it never goes on the OSHA 300 Log; track it in your safety program instead.
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A certification packet should let the executive reasonably believe the 300A is correct: the reviewed log, totals, employee and hours sources, and open issues.
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Supervisors should capture the facts the OSHA criteria depend on: the task, the location, the equipment, the treatment, and any change in work status.
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After an ITA submission, save the confirmation, the exact file or data submitted, and the source records behind it, together with the year's 300A packet.
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A multi-site internal audit samples cases at each establishment and tests the decisions behind them, not just whether the forms exist.
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Correct a 300 Log error by lining out the original entry and entering the correct information, with a note of what changed, when, and why.
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Seasonal workers on your payroll are covered employees: their cases go on the log, and they count toward headcount tests, average employees, and hours worked.
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When a staffing agency places a worker with a client that supervises them day to day, the client records the injury, and the agency does not.
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ITA thresholds use peak establishment headcount: 20 to 249 in Appendix A industries, 250 or more if the establishment keeps records…
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Give each covered establishment the EIN it actually uses; if all sites operate under one legal entity they may share it, but confirm rather than copy.
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Establishments submitting 301 data leave out the employee's name and address and the treating provider and facility details, as 1904.41(b)(9) requires.
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Strip names and identifying details before 300 or 301 data goes into an AI tool; Part 1904 requires it for disclosures outside the permitted recipients.
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Before certification, check each case, not just the totals: work-relatedness, recordability, column, day counts, privacy status, and open updates.
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