OSHA term · Glossary
OSHA 300 Log
Verified vs OSHA sources · 2026-10-05
The Log of Work-Related Injuries and Illnesses (Form 300) — the running list where an employer records each recordable case during the year, with a one- or two-line description and a classification of the outcome (death, days away, restricted/transfer, or other). It must be kept for 5 years and updated as cases develop.
Also known as: Form 300, 300 log
On this page
OSHA 300 Log at a glance
- One line per recordable case, classified into columns G–J.
- Column G = death, H = days away, I = job transfer/restriction, J = other recordable.
- Columns H + I are the DART cases used to compute the DART rate.
- Kept 5 years and updated during that time as classifications change.
In plain English
The year-round list of every serious (recordable) injury or illness at a workplace. Each case gets a line, and you check a box for how bad it was — died, missed work, put on light duty, or other. You keep it for 5 years.
What the rule says
“You must enter each recordable injury or illness on the OSHA 300 Log and 301 Incident Report within seven (7) calendar days of receiving information that a recordable injury or illness has occurred.”
In context
An enforcement, recordkeeping, or general-duty concept under the Occupational Safety and Health Act and 29 CFR. These terms define how OSHA inspects, cites, and penalizes employers.
Where this is written in OSHA's rules
- 29 CFR 1904.29Read on eCFR / OSHA.gov
- 29 CFR 1904.29(b)(3)Read on eCFR / OSHA.gov
Example
A worker gets a recordable laceration with stitches and misses 4 days. On the 300 Log, the case is entered with a short description and classified in column H (days away), with “4” recorded in the days-away count — which then feeds the establishment's DART and total-recordable rates.
Why it matters
The 300 Log is the raw material for your DART and TRIR rates, your 300A summary, and any electronic submission to OSHA. Errors — mis-classifying a days-away case as “other,” or never logging a case — distort your safety metrics and are common recordkeeping citations under Part 1904.
300 Log vs. 300A vs. 301
The 300 Log is the running list of all cases. The 301 is the detailed report behind each individual case. The 300A is the year-end summary of totals that gets posted and (for covered employers) submitted to OSHA. You need all three.
OSHA 300 Log — how each case is classified
| Column | Case outcome |
|---|---|
| G | Death |
| H | Days away from work |
| I | Remained at work — job transfer or restriction |
| J | Other recordable cases |
OSHA 300 Log: frequently asked questions
- How long must the OSHA 300 Log be kept?
- Five years following the end of the calendar year it covers, and it must be updated during that period to reflect newly discovered cases or changes in classification (29 CFR 1904.33).
- What do columns H and I on the 300 Log mean?
- Column H is cases with days away from work; column I is cases where the worker stayed but was on restricted duty or job transfer. Together, H + I are the DART cases used for the DART rate.
- How quickly must a case be entered on the 300 Log?
- Within 7 calendar days of receiving information that a recordable injury or illness has occurred (29 CFR 1904.29(b)(2)).
Related terms
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More OSHA terms
The action an employer takes to fix a cited violation or eliminate a hazard OSHA identified during an inspection. The citation sets an abatement date, the deadline to correct the hazard, and within 10 calendar days after that date the employer must certify to OSHA that the violation was abated. Failure to abate accrues additional penalties of up to $16,550 per day.
Area DirectorThe senior OSHA official in charge of a specific OSHA Area Office — the local unit that runs inspections and enforcement in its geographic territory. The Area Director has the authority to issue citations, propose penalties, hold informal conferences with employers, and approve settlement agreements. When a Compliance Safety and Health Officer (CSHO) completes an inspection, it's the Area Director who ultimately issues the citation.
Bureau of Labor Statistics (BLS)The federal statistical agency within the U.S. Department of Labor that collects, analyzes, and publishes data on workplace injuries, illnesses, and fatalities. BLS conducts the annual Survey of Occupational Injuries and Illnesses (SOII) — compiled from employer OSHA 300 logs — and the Census of Fatal Occupational Injuries (CFOI). SOII data drives OSHA's Site-Specific Targeting (SST) program: establishments whose DART rates significantly exceed their BLS industry average are placed on the SST inspection list.
Competent PersonUnder OSHA's construction standards, a person who is capable of identifying existing and predictable hazards in the surroundings or working conditions, and who has the authorization to take prompt corrective measures to eliminate them. The role requires both knowledge and the authority to act, and is mandated by name in many specific standards — excavations, scaffolds, fall protection, asbestos, and more.
CitationThe formal written notice OSHA issues to an employer after an inspection, describing each alleged violation, the standard cited, the proposed penalty, and the date by which the hazard must be corrected (abated). OSHA must issue a citation with reasonable promptness and no later than six months after the violation occurred.
Closing ConferenceThe meeting at the end of an OSHA inspection where the compliance officer confers with the employer and informally advises them of any apparent violations found. Importantly, the closing conference discusses what was observed and the employer's rights — but it does NOT state final citations or penalties, which come later in the written Citation and Notification of Penalty.
Compliance Officer (CSHO)An OSHA Compliance Safety and Health Officer — the inspector who conducts workplace inspections. A CSHO presents credentials (a photo ID and a serial number), holds the opening conference, performs the walkaround, collects evidence, interviews employees, and recommends citations. CSHOs are either safety specialists or industrial hygienists.
ContestAn employer's formal challenge to an OSHA citation, penalty, or abatement date. To contest, the employer must file a written Notice of Contest with the OSHA Area Director within 15 working days of receiving the Citation and Notification of Penalty. Filing sends the case to the independent Occupational Safety and Health Review Commission (OSHRC); missing the deadline makes the citation a final, un-appealable order.
Sources & verification
- 29 CFR 1904.29 (eCFR / OSHA.gov)
- 29 CFR 1904.29(b)(3) (eCFR / OSHA.gov)
- OSHA — Injury & Illness Recordkeeping Forms (300, 300A, 301)
- 29 CFR 1904.29 — Forms (eCFR)
Reviewed by HazComFast against eCFR, OSHA.gov, NIOSH, and the Federal Register. Last reviewed 2026-10-05. This glossary is general information, not legal advice; OSHA State-Plan states (e.g. California, Michigan) may adopt stricter requirements.
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