Bottom line up front: whether an injury goes on the OSHA 300 log comes down to three questions — did treatment go beyond first aid, were there days away or restricted work, and did a physician diagnose it. The 300, 300A, and 301 are three different forms, not one: the 300 is the year-round log, the 301 is the incident report for each case, and the 300A is the annual summary that must be posted from February 1 to April 30 each year, certified by an executive. Keep everything for five years. I have seen this exact pitfall three times, and the script is always the same: nobody pays attention until the OSHA inspector walks in, and then the whole warehouse panics.
First, Sort Out the OSHA 300 Family: 300, 300A, 301
Plenty of warehouse safety leads with two or three years on the job still think "the OSHA 300" is a single form. It is not. It is a set of three, each with a different job.
The 300 Log is the running ledger for the year: one line per recordable injury or illness — who, when, which department, what happened, what body part, how many days away. The rule requires each recordable case to be entered within 7 calendar days of learning about it. No saving it all up for December.
The 301 Incident Report is the case file behind each line: what happened, the nature of the injury, the medical treatment given — also due within 7 calendar days. Think of it as the expanded version of the 300 line. Inspectors love sampling these, and if the 301 contradicts the 300, you are caught on the spot.
The 300A Summary is the year-end report card: total cases, total days away, total restricted days for the year, certified with an executive's signature and posted where employees can see it from February 1 through April 30 of the following year. Note the word "posted" — sitting in a drawer does not count.
One sentence for the relationship: the 301 is the evidence, the 300 is the ledger, and the 300A is the public report card. If the ledger and the evidence disagree, the report card is worthless.
Record or Not: The OSHA 300 Log Recordability Checklist
This is the most valuable section of the article. OSHA's decision logic is really one rule: if any of the following is true, record it; if none is true, do not.
Recordable: death; days away from work; restricted work or job transfer; medical treatment beyond first aid; loss of consciousness; diagnosis by a physician or other licensed health care professional.
Not recordable (first aid): OSHA's list at 1904.7(b)(5)(ii) is explicit — band-aids, gauze bandages, ice or heat packs, non-prescription medication at non-prescription strength, draining blisters, removing splinters with tweezers, tetanus shots, and the like. The keywords are simple, routine, non-prescription.
The wall-postable decision flow:
- Someone is hurt → treat first, note time, place, and what happened
- Ask: prescription meds, stitches, splint, physical therapy? → Yes = record
- Ask: any days away? Any restricted work or transfer? → Yes = record
- Ask: loss of consciousness? Physician diagnosis? → Yes = record
- None of the above — just a band-aid, ice, or gauze → do not record, but keep an internal memo
In 2023, an Ohio 3PL warehouse gave me the classic counterexample: a picker cut a finger on a carton, slapped on a band-aid, and finished the shift. The safety lead, "playing it safe so nothing gets missed," logged it as recordable. At year end, their DART rate (days-away/restricted cases per 100 full-time workers per year) came out noticeably above peers. A major customer auditing the site spent half an hour interrogating that number. The cost of explaining dwarfed whatever effort "playing it safe" had saved. Remember: the price of over-recording is not paid to OSHA — it is paid to customers and insurers.
The Pitfall I Have Seen Three Times
Pitfall one: logging first aid as medical treatment. The Ohio case above. DART and TRC (total recordable case rate) are hard inputs to customer audits and insurance pricing. Inflate them and nobody explains it away for you. I have seen this pitfall three times, and the safety lead's reasoning is always "better to over-record."
Pitfall two: missing restricted-work days. A worker sprains an ankle, misses no days, but gets two weeks of light duty — that is restricted work, it must be recorded, and those days count toward DART. Many operations log days away but skip restricted days, so the 300A understates reality, and one cross-check against attendance records exposes it.
Pitfall three: forgetting to post the 300A, or posting it unsigned. In 2024, a California distribution center summarized the 300A on time and got the executive signature — but admin forgot to post it on February 1, and there was nothing on the bulletin board when OSHA visited in April. Under OSHA's published 2024 penalty structure, a serious violation runs up to $16,550 per violation. Paying that for a piece of paper that never made it to the wall is one of the most wasteful fines I have seen.
Pitfall four: starting the 5-year clock wrong. The rule is to retain records for five years, counted from the end of the calendar year they cover. Records from 2021 must be kept through the end of 2026, not just into early 2026. Destroy them early and you have deleted your own evidence.
The Counterintuitive Part: Over-Recording Is More Dangerous Than Under-Recording
Instinct says over-recording is the safe play — under-recording is a violation, over-recording is just caution. Thirty-plus projects have taught me the opposite. An under-recorded case discovered by OSHA costs you one penalty; an inflated DART/TRC follows you into every customer audit questionnaire, every insurance renewal, every bid. That is continuous bleeding. Worse, once a case is on the 300 log, "correcting" it to non-recordable is nearly impossible — deleting or downgrading entries is exactly what makes an inspector curious. So the determination has to be right the first time: recordable cases go in within 7 days, non-recordable cases stay out, full stop. That is also why I have zero tolerance for fuzzy language — "I think they took some medicine" must be translated, on the spot, into "prescription or non-prescription."
The Night-Before-Go-Live Checklist: 300A Posting, 5-Year Retention, Exemptions
A checklist you can actually use:
- Confirm exemptions: businesses with 10 or fewer employees company-wide are exempt from recordkeeping; so are certain low-hazard industries (see the industry list in Appendix A to OSHA 1904) — but the exemption covers recordkeeping, not reporting
- Do not confuse reporting: fatalities within 8 hours and hospitalizations, amputations, or eye losses within 24 hours must be reported to OSHA directly — that is reporting, a separate duty from 300-log recordkeeping, and you owe both
- 300A calendar: post February 1, take down April 30, executive certification signature, set a recurring reminder
- Five-year retention: archive each year's 300, 300A, and 301s as a package, five years from the end of that year
- Employee access: current and former employees have the right to see the 300 log (beyond limited redactions) — do not refuse
Tape this checklist above the safety manager's desk. The people who stay calm when the OSHA inspector walks in are the ones who took these three forms seriously on ordinary days.
By Lin Xiao, WMS Implementation Consultant
