The form 300 osha document, officially titled the OSHA Form 300 Log of Work-Related Injuries and Illnesses, is the cornerstone of federal workplace injury recordkeeping in the United States. Every covered employer with more than ten employees in a non-exempt industry must maintain this log throughout the calendar year, recording each work-related death, injury, or illness that meets specific severity criteria. If you manage safety at a manufacturing plant, construction site, warehouse, or healthcare facility, this single form is one of the most consequential documents on your desk.
Form 300 is not just paperwork. It is the data source OSHA uses to spot hazardous trends, the document inspectors request first during a compliance visit, and the record your insurance carrier may reference when calculating premiums. A poorly maintained log can trigger citations, while an accurate one helps you identify the exact tasks, departments, and shifts where injuries cluster. Many employers underestimate how often a missing entry becomes a six-figure problem.
The form works alongside two companion documents: Form 301, the Injury and Illness Incident Report that captures individual case details, and Form 300A, the Annual Summary that must be posted in a visible workplace location from February 1 through April 30 each year. Together, these three forms create a complete recordkeeping system mandated under 29 CFR Part 1904. Understanding how they interact is essential for compliance and for any safety professional preparing for an OSHA certification exam.
This guide walks through every practical aspect of Form 300: who must keep it, what counts as recordable, how to classify cases correctly, where electronic submission fits in, and how recordkeeping mistakes lead to citations. We'll also cover the most common interpretive questions, including how to handle restricted duty, medical treatment versus first aid, mental health conditions, COVID-19 cases, and remote workers. By the end, you'll be able to make confident recordkeeping decisions in real time.
Federal OSHA updated its electronic submission requirements in January 2024, expanding the categories of establishments that must submit Form 300 and Form 301 data through the Injury Tracking Application. If your establishment has 100 or more employees in a designated high-hazard industry, those expanded rules apply to you. We'll explain exactly what changed and how to file electronically without triggering an audit.
Before diving into mechanics, remember the underlying purpose. The recordkeeping rule exists so that workers, employers, and regulators share a common factual picture of workplace harm. When the log is accurate, it protects everyone. When it is sloppy, falsified, or simply ignored, the cost lands on the people who can least afford it.
By the end of this article you'll know the difference between a recordable case and a reportable case, when to count days away from work, how the privacy concern case rules work, and how to defend your log if OSHA shows up with a subpoena. Let's start with the numbers that frame the entire system.
An employee experiences a work-related injury or illness. The clock starts the moment a supervisor or employer representative becomes aware of the event, not when the worker first feels symptoms.
Evaluate whether the case meets recording criteria: death, days away, restricted duty, transfer, medical treatment beyond first aid, loss of consciousness, or significant diagnosis. Document the reasoning in case you need to justify it later.
Within seven calendar days, complete the Injury and Illness Incident Report with case-specific details including how and where the incident occurred, body parts affected, and the object or substance involved.
Add a single row summarizing the case: employee name, job title, date, location, description, classification, and days counts. Use case number cross-references to link back to Form 301.
Revise day counts as cases evolve. If an injury initially required only medical treatment but later involves restricted duty, update the classification. Continue tracking until the case closes or hits the 180-day cap.
Generate the annual summary, have a company executive certify it, and post in a conspicuous location from February 1 through April 30. Submit electronically if your establishment qualifies under the ITA rules.
Not every employer must maintain Form 300. The recordkeeping rule applies to establishments with more than ten employees at any point during the prior calendar year, unless your industry appears on OSHA's partially exempt list. The exemption is based on the establishment's primary North American Industry Classification System (NAICS) code, not the parent company's. A construction firm that owns a small administrative office may still have a recordable obligation at the construction site while the office is exempt.
Partially exempt industries include many retail, finance, insurance, and service NAICS codes — think bookstores, accounting firms, dental offices, and many real estate brokerages. However, even exempt employers must still report fatalities within eight hours and any inpatient hospitalization, amputation, or loss of an eye within twenty-four hours of becoming aware. Exemption from recordkeeping is never exemption from reporting. Confusion between the two is one of the most common mistakes auditors find during an OSHA training near me follow-up review.
The ten-employee threshold counts all employees across the company, not per establishment. If your business has three locations with seven workers each, you still cross the threshold and must maintain logs at each establishment separately. Temporary workers supplied by a staffing agency count toward the host employer's totals when the host directs day-to-day work. The host employer is generally the one obligated to record their injuries on Form 300, even though the staffing agency cuts their paycheck.
Multi-employer worksites add complexity. On a construction project, each contractor maintains its own Form 300 for its own employees. The general contractor does not record subcontractor injuries unless those workers are jointly employed. Joint employment is determined by who supervises, who provides equipment, and who controls scheduling. When in doubt, document the relationship and consult OSHA's letters of interpretation, which contain hundreds of fact-specific rulings on edge cases.
Federal OSHA covers private-sector employers in about half the country. The remaining states operate State Plans approved by federal OSHA, and many of those plans have stricter or differently structured recordkeeping requirements. California, for instance, requires Form 300 entries to remain consistent with California labor code definitions. If you operate in multiple states, you cannot assume one set of rules satisfies all jurisdictions. Always confirm with your state-plan agency.
Employee count is measured by individuals, not full-time equivalents. A part-time stocker who worked six shifts during the year still counts as one employee. Seasonal workers count during their employment period. Independent contractors generally do not count, but misclassification is a frequent enforcement target — if the IRS or state labor agency would call them an employee, OSHA likely will too, and any unrecorded injury they suffered becomes a citation risk.
Finally, even employers below the threshold should consider voluntary recordkeeping. Insurance carriers, prime contractors, and prequalification systems like ISNetworld and Avetta increasingly require Total Recordable Incident Rate (TRIR) data calculated from Form 300. Without a log, you cannot calculate TRIR, and without TRIR you may be locked out of major bids. Voluntary compliance often pays for itself within a single contract cycle.
A recordable case is one that must be entered on Form 300. The triggers include death, days away from work, restricted work or job transfer, medical treatment beyond first aid, loss of consciousness, or a significant injury diagnosed by a licensed health care professional such as a fractured bone, punctured eardrum, or cancer. Needlestick injuries and tuberculosis exposures have their own dedicated criteria under §1904.8 and §1904.11.
Recording does not imply employer fault. Even if the employee violated a safety rule, the injury is still recordable if it is work-related. Work-relatedness is presumed if the incident happened in the work environment. Specific exceptions, like injuries occurring during voluntary wellness programs or personal grooming, are listed in §1904.5(b)(2). Document your work-relatedness analysis when you exclude a case.
A reportable case is one OSHA must be notified about directly, by phone or online form, within tight deadlines. Fatalities must be reported within eight hours. Any inpatient hospitalization, amputation, or loss of an eye must be reported within twenty-four hours of the employer learning of the event. Reporting is required even for partially exempt employers who don't maintain Form 300.
Reporting goes through OSHA's 800-321-OSHA hotline, the nearest area office, or the online reporting portal. After a fatality or catastrophe report, expect a follow-up inspection. Failure to report carries a separate citation in addition to any underlying hazard violation. A late report after a fatality is the single most expensive recordkeeping mistake an employer can make, often triggering willful penalty multipliers.
OSHA lists fourteen specific treatments that count as first aid and therefore do not trigger recordability on their own. These include over-the-counter medications at non-prescription strength, tetanus immunizations, wound cleaning, bandaging, hot or cold therapy, finger guards, eye patches, and removing splinters by simple means. The list is exclusive — if a treatment isn't on it, it's medical treatment.
The first-aid distinction matters because the same physical injury can be either recordable or non-recordable depending solely on what treatment was provided. A cut that receives only bandages is first aid; the same cut receiving stitches becomes medical treatment and is recordable. Train supervisors to ask the treating clinician specifically what was done, not just the diagnosis, before deciding whether to record.
When OSHA challenges a recordkeeping decision, the question is rarely whether you made the right call — it's whether you can explain your call. Keep a brief internal note for every case you choose not to record, citing the specific §1904 exception that applies. A two-sentence memo saved alongside the Form 301 has resolved thousands of citation disputes in the employer's favor.
Recordkeeping citations are among the most frequently issued OSHA violations because the underlying paperwork is concrete and easy to inspect. A compliance officer doesn't need expert testimony to count whether you posted Form 300A on February 1 — they just look at the bulletin board. Understanding the most common mistakes will dramatically reduce your exposure during an inspection or an Injury Tracking Application audit.
The number one error is misclassifying medical treatment as first aid. Supervisors hear that a worker received Tylenol and a bandage and decide the case isn't recordable, when in fact prescription-strength ibuprofen or stitches were also given. The fix is to require treatment-specific documentation from the clinic — not just a return-to-work note. Build a simple intake form your safety team uses to query providers about exactly what treatments were administered.
Mistake number two involves day counts. Many employers stop counting restricted-duty days when the worker returns to full duty briefly, then resume counting if symptoms recur, creating broken sequences. OSHA's rule is that you count calendar days, not workdays, and you continue counting until the case closes — meaning the employee returns to pre-injury status or reaches the 180-day cap. Pause-and-restart counting almost always understates the true impact.
The third frequent error is failing to record a case because the worker didn't actually miss work, even though the doctor recommended time off. Recordability is based on the medical recommendation, not whether the employee complied. If the doctor says "stay home two days" but the worker comes in anyway, you still count those two days as days away from work on Form 300. The employee's heroism doesn't change the recordkeeping math.
Privacy concern cases trip up many employers. Sexual assault injuries, mental illness, HIV, hepatitis B, tuberculosis, and injuries to intimate body parts must be recorded — but the employee's name must be replaced with "privacy case" on Form 300. The full name is recorded separately on a confidential list. Failing to redact, or failing to record because of confidentiality concerns, are both citable. Train your team on both halves of this rule.
The fifth issue is mishandling cases that involve travel, working from home, or company-provided transportation. Injuries during a normal commute are not work-related, but injuries during travel between job sites generally are. Home-office injuries are recordable if the worker was performing work tasks at the time. The COVID-19 era expanded telework dramatically, and many employers still lack clear policies on what to do when a remote worker reports a slip-and-fall during the workday.
Finally, employers who maintain logs in spreadsheet form often forget to use OSHA's specific form layout. While you can use an equivalent form, every column required on the federal form must be present in the same general structure. Inspectors who can't easily map your custom spreadsheet to the standard form will often cite you for inadequate records. Use the official PDF or a recognized EHS software product to avoid this trap.
Electronic submission requirements have transformed Form 300 compliance over the past few years. Under the rule that took effect January 1, 2024, three categories of establishments must submit injury data electronically through the Injury Tracking Application: establishments with 250 or more employees in industries required to keep records, establishments with 20-249 employees in designated high-hazard industries, and the new category of establishments with 100 or more employees in select industries that must submit Form 300 and Form 301 data in addition to Form 300A.
The high-hazard NAICS list covers more than seventy industries including construction, manufacturing, warehousing, agriculture, and healthcare. If your primary NAICS appears in Appendix A of §1904.41, electronic submission is mandatory regardless of your overall company size — only the establishment headcount matters. Many multi-location employers discover one or two establishments qualify while others do not, requiring location-by-location compliance tracking. For more context on agency communication channels, see the Cal/OSHA contact directory for state-plan specific guidance.
The annual deadline is March 2 for the prior calendar year's data. To submit, you'll need an ITA account, your establishment's EIN, NAICS code, and total employee count for the year. You upload data either by typing it into the web form, uploading a CSV file in the OSHA-prescribed format, or transmitting via API for enterprise systems. The CSV approach is the most efficient for multi-location employers, but column headers must match OSHA's specification exactly or the file will be rejected.
One important note about Form 301 electronic submission: OSHA does not require submission of the narrative description of the incident, the employee's name, address, or treating physician. Only the data fields specified in the rule must be transmitted. Many EHS software products automatically strip personally identifying information before submission, but verify your system handles this correctly. Submitting more PII than required is itself a potential privacy violation under separate federal and state laws.
OSHA publishes establishment-level injury data publicly on its website after submission, allowing journalists, unions, contractors, and competitors to compare your injury rates against peers in your industry. This public disclosure is intentional — the rationale is that transparency drives safety improvement. Whether you support that policy or not, plan for the reputational implications. Your TRIR is now a search-engine-indexable fact, not a private internal metric.
Failure to submit timely is itself a citable violation, separate from any underlying recordkeeping errors. OSHA actively cross-references submitted data against state workers' compensation filings to detect underreporting. If your ITA submission shows three injuries but your state shows forty workers' comp claims for the same establishment, expect an audit. The agency has invested significantly in data analytics to identify suspicious patterns.
To prepare for ITA submission, establish a January internal review process: pull the prior year's logs, verify totals match Form 301 records, confirm day counts are finalized, and reconcile against workers' compensation data. Have a second reviewer audit the file before submission. The thirty days between January 1 and the February 1 posting deadline is the natural window for this work — if you wait until late February to start, errors will slip through.
Beyond the mechanics of filling out the form, effective recordkeeping requires building organizational habits that surface injuries quickly and accurately. The most well-designed log is useless if supervisors don't report incidents in the first place. Underreporting — whether intentional or driven by safety-incentive programs that punish reporting — remains OSHA's biggest concern. The 2016 anti-retaliation provisions in §1904.35 specifically prohibit policies that discourage workers from reporting injuries.
Start by reviewing your safety incentive program. If employees lose bonuses or get sent to remedial training simply for reporting an injury, OSHA considers that a chilling effect on reporting and may cite the program itself. Outcome-based incentives are disfavored; instead, reward leading indicators such as near-miss reporting, safety observations, and toolbox-talk participation. These behaviors actually reduce injuries rather than just hiding them.
Train every supervisor on the difference between an investigation and a recordability determination. The investigation answers "what happened and how do we prevent it next time." The recordability determination answers "does this case meet §1904 criteria." These are separate exercises and should never be conflated. A supervisor who decides an injury "shouldn't count" because the worker was careless is making a recordability decision they're not qualified to make.
Implement a centralized reporting channel — phone hotline, email inbox, or app-based form — so that every injury reaches the same trained recordkeeper. Decentralized reporting where each supervisor decides what to log creates wild inconsistencies across locations. The recordkeeper should review medical documentation directly, not rely on supervisor summaries. When supervisors filter information, important details disappear.
Audit your own logs twice a year. Sample ten percent of Form 301 reports and verify each one is reflected on Form 300 with correct classification. Sample ten percent of workers' compensation claims and verify each work-related claim resulted in a Form 300 entry. Discrepancies between systems are the single biggest red flag OSHA looks for during a recordkeeping audit, and you want to find them before the agency does. Reviewing requirements alongside OSHA 10-hour training for supervisors reinforces these habits across the workforce.
Document your decisions in writing. For every borderline case — first aid versus medical treatment, work-related versus personal, joint employment versus separate — write a one-paragraph memo explaining the facts and the §1904 provision you relied on. Store these memos with the Form 301 for that case. When OSHA challenges a determination years later, contemporaneous notes are far more persuasive than reconstructed reasoning.
Finally, treat Form 300 as a leadership tool, not just a compliance burden. Review the log monthly with operations leaders. Look for trends — same body part across multiple workers, same task across multiple shifts, same equipment across multiple departments. The form was designed to make hazards visible, and when used that way, it can cut your injury rate dramatically. Compliance and prevention are not separate goals; they are two faces of the same recordkeeping discipline.