OSHA 301 Form: Complete Guide to Injury and Illness Incident Reports for 2026

The OSHA 301 form, officially titled the Injury and Illness Incident Report, is one of three core recordkeeping documents that most employers in the United States must maintain under 29 CFR 1904. It captures the detailed story of what happened when a worker suffers a recordable injury or illness, going far beyond the simple log entry on the 300. Understanding the OSHA 301 form is essential for safety managers, HR professionals, supervisors, and small business owners who want to stay compliant and avoid citations during a workplace inspection.

Unlike the 300 Log, which is a summary line entry, the 301 is a narrative document. It asks questions about the injured employee, the physician who treated them, the time and location of the event, the objects or substances involved, and the specific body parts affected. Each recordable case requires its own dedicated 301, and the form must be completed within seven calendar days of when the employer learns of the incident. This deadline trips up many new safety coordinators.

Recordkeeping is one of the most cited categories in OSHA inspections, with thousands of violations issued each year for missing, incomplete, or inaccurate 300, 300A, and 301 forms. Penalties under the 2026 adjusted civil penalty schedule reach $16,550 per other-than-serious violation, and a pattern of poor recordkeeping can quickly multiply that figure across multiple cases. A clean 301 form is not just paperwork, it is the legal proof that your safety program took a workplace incident seriously and documented it properly.

The 301 also plays a role outside of OSHA enforcement. Workers compensation insurers, state agencies, internal trend analysis, and even litigation discovery requests all may rely on the data captured in the form. A vague or rushed entry can damage a workers comp claim, weaken your defense in a lawsuit, or hide a hazard pattern that would have prevented future injuries. Treating the form as a serious investigative document, not a checkbox, produces better safety outcomes across the board.

OSHA accepts equivalent forms as long as they capture the same information, which means many companies use their workers compensation First Report of Injury or a custom internal template to satisfy the 301 requirement. The agency does not care about format, only about content and timeliness. That flexibility matters for multi-state employers who already file similar documents with state labor departments, because a single well-designed form can often pull double duty.

This guide walks through every box on the OSHA 301 form, explains the deadlines and retention rules, covers the most common mistakes that lead to citations, and shows how the 301 fits alongside the 300 Log and 300A annual summary. By the end you will know exactly when a 301 is required, how to fill it out defensibly, who can see it, how long to keep it, and how to use the data to actually reduce injuries at your facility.

Knowing exactly when an OSHA 301 form is required can be surprisingly tricky, because the trigger is the recordability of the case rather than its severity in the everyday sense. Under 29 CFR 1904.7, an injury or illness becomes recordable if it results in death, days away from work, restricted work or job transfer, medical treatment beyond first aid, loss of consciousness, or a significant injury or illness diagnosed by a licensed health care professional. Each of these triggers a 300 Log entry and a corresponding 301 incident report.

The seven-day clock starts the moment the employer receives information that a recordable case has occurred, not the moment the injury actually happened. If a worker reports a back strain on Monday but their physician only diagnoses a recordable condition the following week, the deadline runs from that diagnosis date. Documenting when notice was received protects you if the timing is ever questioned during an OSHA inspection, so many safety teams keep a small intake log just to capture knowledge dates.

Industry exemptions matter here too. Appendix A to Subpart B of Part 1904 lists low-hazard industries, mostly retail, finance, insurance, real estate, and certain service sectors, that are partially exempt from routine recordkeeping. Companies in these industries with 10 or fewer employees at all times during the previous calendar year do not have to keep 300 or 301 forms unless OSHA or the Bureau of Labor Statistics specifically requests them in writing for a survey.

Even exempt employers, however, still must report fatalities within 8 hours and inpatient hospitalizations, amputations, or eye losses within 24 hours under 29 CFR 1904.39. That severe injury reporting is separate from the 301 process. The 301 covers the broader universe of recordable cases that the 8 and 24 hour rules do not necessarily capture, which is why the two systems must run in parallel.

Multi-establishment employers need to track 301 forms by establishment, not by company. Each physical location with its own recordable cases keeps its own 300 Log and 301 reports. If you run five warehouses and a corporate office, you potentially maintain six separate sets of records, each posted, retained, and made available locally. This decentralized approach catches many growing companies off guard when they open a second site.

State plan states such as California, Michigan, Washington, and others may have additional or stricter recordkeeping rules layered on top of federal Part 1904. For a deep dive into one of the most active state programs, see Oregon OSHA, which mirrors many federal requirements but adds its own posting and electronic submission specifics. Always check your state plan before assuming the federal rule is the full picture.

Finally, do not confuse the 301 with the OSHA 300A annual summary that gets posted every February 1 through April 30. The 300A is a single page of totals covering the prior calendar year. The 301 is a per-incident document that you complete throughout the year. Both are required, both have their own rules, and missing either can produce a separate violation in the same inspection.

The most common OSHA 301 mistake is treating the narrative boxes as a formality. Inspectors look closely at how the activity, event, injury, and harmful object are described, because vague answers signal a weak safety culture and often correlate with other recordkeeping gaps. A 301 that says "hurt at work" or "injured during job duties" tells the inspector that the employer did not investigate the incident in any meaningful way, which invites deeper scrutiny of training records, hazard assessments, and equipment maintenance logs.

The second frequent error is missing the seven-day deadline. Many safety coordinators wait for the workers compensation claim to be finalized or for the physician to issue a final diagnosis before opening the 301. That is wrong. Recordability must be determined as soon as enough information is available, and the 301 must be completed within seven days of that knowledge date. If facts change later, you update the 301, but you do not delay starting it.

Mismatched case numbers between the 300 Log and the 301 form create reconciliation nightmares during audits. Every line on the 300 should correspond to exactly one 301, and the case numbers must match. Companies that handle recordkeeping in spreadsheets often lose this linkage when entries are sorted, copied, or filtered. EHS software solves the problem because the system maintains the link automatically, but only if users actually log cases in the system rather than tracking them offline.

Confidentiality slips are another category of risk. The 301 contains protected health information, and certain cases involving sexual assault, mental illness, HIV, drug or alcohol abuse, and similar sensitive diagnoses are subject to "privacy case" rules that require the employee name to be withheld from the 300 Log. The 301 still records the case but must be stored with extra access controls. Mishandling these cases can violate both OSHA and state privacy laws simultaneously.

Many small employers wrongly assume that because they have fewer than ten employees they are completely exempt from the 301. The 10-employee partial exemption applies only to routine recordkeeping. All employers, regardless of size, must still report fatalities within 8 hours and inpatient hospitalizations, amputations, or eye losses within 24 hours. Smaller employers also must keep records if BLS or OSHA sends a written survey request, so the safest practice is to maintain the forms even when not strictly required.

A surprising number of citations stem from companies that completed the 301 correctly but failed to make it available during inspection. The agency expects records to be produced within four business hours of a request from a compliance officer. If the safety manager is on vacation and nobody else knows where the binder is, that delay can become a violation in itself. Cross-train at least two people per establishment and keep digital backups in a known shared drive.

Finally, ignoring corrective action is the deepest mistake of all. The 301 is not just compliance paperwork, it is data that should drive prevention. Companies that summarize and review 301 data quarterly to identify hazard patterns, equipment problems, and training gaps consistently outperform peers on injury rates and insurance costs. The form has value far beyond the file cabinet if leadership actually reads what is inside it.

Best practice for 2026 starts with treating the OSHA 301 form as the foundation of a real incident investigation process rather than as a compliance afterthought. Build a standard intake workflow that begins the moment a supervisor learns of a possible recordable case. Use a one-page first-report template at the scene, capture photographs of the area and equipment, gather witness statements while memories are fresh, and let that intake document feed directly into the 301 narrative within the seven-day window.

Standardize narrative writing across your safety team using the four-element formula: activity, event, injury, harmful object. Train every supervisor and HR generalist on the formula and review the first few 301s each new investigator completes. Consistency across cases makes trend analysis possible and protects the company if a single form ever becomes an exhibit in litigation. Inconsistent writing styles across a 300 Log undermine the credibility of the entire recordkeeping system.

Move to electronic recordkeeping if you have not already. The 2024 amendments to 1904.41 expanded the electronic submission of 300, 300A, and 301 data to OSHA for establishments with 100 or more employees in designated high-hazard industries. Building the workflow now positions you for compliance regardless of how the rules evolve. Even employers not required to submit electronically benefit from EHS platforms that enforce field completeness, maintain case-number linkages, and produce audit-ready exports on demand.

Conduct a quarterly internal audit of your 301 forms. Sample at least 10 percent of cases or every case if your volume is low. Check for completeness of all sections, accuracy of dates, presence of detailed narrative, correct linkage to the 300 Log, and proper handling of privacy cases. Document the audit findings and the corrective actions taken. An audit trail demonstrates good faith and often reduces penalties if an OSHA inspection later finds isolated errors. For broader context on the law that created these obligations, the OSHA Act remains the statutory foundation worth understanding.

Build review of 301 data into your safety committee meetings. Each meeting should include a roll-up of the cases reported since the last meeting, the body parts and activities involved, the root causes identified, and the corrective actions assigned with owners and due dates. This loop converts the 301 from a static record into an active prevention tool. Companies that close this loop typically see double-digit reductions in recordable incident rates over two to three years.

Integrate the 301 process with workers compensation reporting to avoid duplicate data entry and contradictory narratives. The story told on the OSHA 301 should match the story told on the workers compensation first report of injury, the claim file, and any return-to-work documentation. Contradictions across these documents are a favorite tool for plaintiff attorneys in third-party liability cases and for insurance carriers seeking to deny or reduce claims.

Plan for inspector readiness by knowing exactly where your 301s live, who can access them, and how they will be produced. The four-business-hour rule is unforgiving. Run a fire drill twice a year where the safety manager calls a designated backup and asks them to retrieve the 301 for a specific case while timing the response. Identify and fix gaps in storage, access, and knowledge before an actual compliance officer is standing in your lobby with a clipboard.

Putting the OSHA 301 form into practice requires a small set of disciplined habits that anyone can adopt. Start by keeping a printed stack of blank forms or a saved digital template in every supervisor's office and in the safety manager's go-bag. The friction of finding a form is the most common reason that first-day documentation slips. Removing that friction by making the form physically available everywhere a recordable incident might occur dramatically improves the speed and quality of the initial report.

Adopt a case-numbering convention that ties together the 301, the 300 Log, the workers compensation claim, the internal investigation file, and any photographs or interview notes. A simple year-establishment-sequential numbering scheme such as 2026-PHX-014 makes cross-referencing painless across systems and survives staff turnover. Document the convention in your written recordkeeping procedure so that new safety staff can pick it up without losing continuity.

Train supervisors annually on recordability so that they recognize when a case must be opened in the first place. Many missed 301s are not the safety manager's fault, they are first-line supervisors who heard about an injury but assumed it was minor and never reported it upstream. A simple 30-minute training covering medical treatment versus first aid, the days-away threshold, restricted duty, and the diagnosed condition triggers is one of the highest-return safety investments any company can make.

Communicate with your employees about the 301 process. Workers who know that their injuries will be investigated thoroughly and confidentially are more likely to report symptoms early, before a minor strain becomes a major lost-time case. Discouraging reporting, whether explicitly or through subtle pressure, is a separate violation under 29 CFR 1904.35 and the new anti-retaliation provisions. A culture that welcomes reporting produces better data and better outcomes.

Use 301 data to feed your job hazard analysis program. Each new incident should trigger a review of the JHA for the task involved. If the JHA did not identify the hazard that caused the injury, update it. If the JHA identified the hazard but controls failed, investigate why. This feedback loop transforms the 301 from a backward-looking record into a forward-looking prevention engine and demonstrates to OSHA that your safety program learns from experience.

Keep your retention plan boring and bulletproof. Five years from the end of the calendar year of the incident is the rule, and the safest practice is to keep the records longer if storage allows. Move closed-year records to a clearly labeled archive folder, whether physical or digital, with read-only access. Index the archive by year and establishment so retrieval during an inspection or insurance audit is a matter of minutes rather than days.

Finally, view the OSHA 301 form as part of a larger story about how your organization treats worker safety. The form is small, but the discipline required to complete it correctly, on time, and with real narrative content is a meaningful signal about safety culture. Companies that get the small things right with recordkeeping almost always get the big things right with hazard control, training, and emergency response. Start with the 301, build the habits around it, and the rest of your safety program will follow.