Filling out
OSHA Form 300A means you take the year-end totals from your OSHA Form 300 log, transfer them into the Summary of Work-Related Injuries and Illnesses, have a company executive certify the numbers, post the form in a visible workplace spot from February 1 through April 30, and electronically submit it through the
Injury Tracking Application by March 2 if your establishment is covered. Most private-sector employers with more than 10 employees who are not in a
partially exempt industry under 29 CFR 1904.2 must complete the form, even if they had zero recordable injuries during the year.
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Bureau of Labor Statistics survey estimated that private industry employers reported 2.6 million nonfatal workplace injuries and illnesses in the most recent reporting year, and OSHA’s own audits have long flagged underreporting and form errors as widespread compliance failures.
Here is what you will learn in this guide:
- đź“‹ Exactly which boxes to fill on Form 300A, line by line, with no guesswork
- 🏠Whether your business is exempt or required to post and e-file the summary
- ⚖️ The federal rules, state-plan twists, and penalty exposure tied to each step
- 🧑‍💼 Three named real-world examples covering construction, healthcare, and warehousing
- 🧠The most common Form 300A mistakes and how to dodge each one
What OSHA Form 300A Actually Is
OSHA Form 300A, titled the
Summary of Work-Related Injuries and Illnesses, is a one-page year-end snapshot. It rolls up every recordable case from your detailed
OSHA Form 300 log into total counts of injuries, skin disorders, respiratory conditions, poisonings, hearing loss, and other illnesses. The form also asks for total days away from work, total days on job transfer or restriction, average employee count, and total hours worked.
The form serves three audiences. First, it gives workers a clear view of the safety record at their establishment, which supports their right to know under
Section 8 of the OSH Act. Second, it gives OSHA inspectors a fast way to evaluate hazard trends during programmed inspections. Third, it feeds national injury and illness data through the
Injury Tracking Application for industry benchmarking.
The plain-English meaning is simple: 300A is the public-facing scoreboard for your safety year. The consequence of skipping it is a citation under 29 CFR 1904.32. A real example: when a Texas auto-parts shop failed to post its 300A in 2023, OSHA cited the company and added recordkeeping violations to a wider inspection. The common misconception is that small employers and low-injury employers are off the hook. They usually are not, because the posting rule applies even if zero injuries happened during the year.
Form 300A vs. Form 300 vs. Form 301
These three forms work as a package under
29 CFR 1904.29. Form 300 is the running log where you record each recordable case as it happens.
Form 301 is the Injury and Illness Incident Report, a deeper one-page record for each case that captures what the employee was doing, how the incident happened, and what object or substance caused harm. Form 300A is the year-end summary derived from Form 300.
| Form |
Purpose |
| Form 300 |
Running log of each recordable injury and illness during the year |
| Form 301 |
Detailed incident report for each individual case, due within 7 calendar days |
| Form 300A |
One-page year-end summary, posted Feb 1–Apr 30 and e-filed by March 2 |
The consequence of mixing them up is real. If you post Form 300 instead of Form 300A, you may expose private employee medical details, which violates
29 CFR 1904.29(b)(7)–(10) privacy rules. That can trigger a separate citation on top of the posting violation.
Who Must Complete Form 300A
The general rule is that any private-sector employer with more than 10 employees at any point during the calendar year must keep OSHA injury and illness records, including Form 300A. This is set in
29 CFR 1904.1. The 10-employee count is company-wide, not per location, and it covers part-time, seasonal, and temporary workers on your payroll.
There is a second filter on top of the size test. If your establishment falls inside a
partially exempt industry list in Appendix A to Subpart B, you are off the hook for routine recordkeeping. Examples include many retail stores, eating and drinking places, insurance carriers, and legal services firms. The consequence of guessing wrong is steep, because OSHA still expects partially exempt employers to report fatalities under
29 CFR 1904.39.
A common misconception is that “establishment” means “company.” It does not. An establishment is a single physical location where business is conducted, so a multi-site company keeps a separate 300A for each location. Skipping this step means you may post the wrong injury totals at each site.
Electronic Submission Rules Under 1904.41
Under the expanded
29 CFR 1904.41 rule that took effect January 1, 2024, three groups of employers must electronically submit data through OSHA’s ITA portal each year by March 2:
- Establishments with 250 or more employees in industries that must routinely keep records
- Establishments with 20–249 employees in designated high-hazard industries in Appendix A to Subpart E
- Establishments with 100 or more employees in higher-hazard industries listed in Appendix B to Subpart E, who must also submit Form 300 and Form 301 data
The plain-English consequence: if you fit any of these buckets, posting alone is not enough. A real example is a 140-employee meatpacking plant in Iowa, which must e-file 300, 301, and 300A data because NAICS 311612 is on Appendix B. The common misconception is that paper submission still counts. It does not, and OSHA may issue an other-than-serious citation for failure to e-file.
State Plan Twists
State Plan states such as California, Michigan, Washington, Oregon, Kentucky, and Virginia run their own OSHA-approved programs and may impose extra rules.
Cal/OSHA generally mirrors federal recordkeeping but has stricter
serious injury reporting timelines, requiring immediate reporting of any serious injury, illness, or death.
Michigan MIOSHA follows federal forms but issues its own enforcement guidance. The consequence of treating a State Plan like federal-only is missed deadlines and parallel citations.
A common misconception is that State Plans use different forms. Most accept the federal 300, 301, and 300A. The real twist sits in the deadlines, definitions of “serious,” and supplemental reporting obligations.
Line-by-Line Walkthrough of Form 300A
The form has four labeled blocks: Establishment Information, Employment Information, Summary, and Certification. Each box has a precise meaning under
29 CFR 1904.32. Filling them in the wrong order is a common error that distorts your incidence rate calculation.
Use your Form 300 log as the source. Tally cases by category, then transfer the totals. Do not include first-aid-only cases, because those are not recordable under
29 CFR 1904.7.
Establishment Information
This top block asks for the establishment’s name, street address, city, state, ZIP code, industry description,
NAICS code, and Standard Industrial Classification if known. The plain-English explanation: identify the exact site where these injuries occurred. The consequence of using the corporate headquarters address for a remote field site is misclassified data and possible recordkeeping citation under 1904.30.
A real-world example:
Maria, an HR manager at a 60-employee custom cabinet shop in Grand Rapids, lists her shop’s physical address and NAICS 337110 for wood kitchen cabinet manufacturing, not the holding company’s downtown office. The common misconception is that NAICS is optional. It is not, because OSHA uses it to verify whether you fall inside Appendix A or Appendix B for e-filing.
Employment Information
Employment Information has two boxes: annual average number of employees, and total hours worked by all employees during the year. To compute the average, add up the total number of employees on payroll for each pay period, then divide by the number of pay periods. To compute total hours, sum actual hours worked by all employees, including overtime, but exclude paid leave such as vacation, holiday, and sick days.
The consequence of inflating hours is an artificially low incidence rate, which OSHA may flag during an inspection. The consequence of underreporting hours is the opposite: a higher rate that may trigger programmed inspections. A real-world example:
James, a safety director at a 220-bed nursing home, pulls hours from the payroll system and excludes 11,400 hours of paid time off to land at 412,000 total hours worked. A common misconception is that salaried employees count as 2,000 hours each. OSHA’s
Form 300A instructions allow that estimate only if no actual hours data exists.
Summary of Cases
This block has three rows: Total Number of Deaths (G), Total Number of Cases with Days Away From Work (H), Total Number of Cases with Job Transfer or Restriction (I), and Total Number of Other Recordable Cases (J). Each case from your Form 300 log fits into exactly one of these four categories, never more than one.
Then there are two more rows: Total Number of Days Away From Work (K), and Total Number of Days of Job Transfer or Restriction (L). Cap each case at 180 days under
29 CFR 1904.7(b)(3)(viii). The consequence of double-counting a case in both H and I is an inflated case count and possible citation. A real example:
Devon, a roofing foreman in Atlanta, had a worker with 14 days away followed by 30 restricted days. Devon checks column H only, because OSHA rules say the more severe outcome wins.
Injury and Illness Type Counts
The bottom of the Summary asks for case counts by category: (M1) Injuries, (M2) Skin Disorders, (M3) Respiratory Conditions, (M4) Poisonings, (M5) Hearing Loss, and (M6) All Other Illnesses. Each recordable case fits in exactly one of these six. A laceration is an injury. A contact dermatitis case is a skin disorder. A standard threshold shift in hearing is hearing loss under
29 CFR 1904.10.
The consequence of misclassifying an illness as an injury is distorted national surveillance data and potential citation. A common misconception is that COVID-19 always counts as a respiratory condition. OSHA’s
enforcement guidance treats work-related COVID-19 cases as respiratory illnesses on the 300 log, but only if they meet the work-relatedness test under 1904.5.
Certification by a Company Executive
The certifying signer must be one of four people under
29 CFR 1904.32(b)(4): an owner, an officer of the corporation, the highest-ranking company official working at the establishment, or that official’s immediate supervisor. The signer attests that the document was reviewed and is correct and complete.
The consequence of letting the safety coordinator sign is a citation, because that role rarely meets the executive threshold. A real example:
Priya, the COO of a 300-employee logistics firm, signs the 300A herself rather than delegating to the warehouse manager. A common misconception is that an electronic signature is not allowed. It is, as long as the signer meets the executive criteria.
Posting and Submission Deadlines
Three dates anchor the 300A cycle. The form must be posted from
February 1 through April 30 at each establishment in a place where employee notices are usually displayed, per
29 CFR 1904.32(b)(5). Electronic submission through the
Injury Tracking Application is due by
March 2 each year for the prior calendar year’s data. Records must be kept on file for
five years under 29 CFR 1904.33.
The consequence of late posting is a citation that can stack across multiple sites. A real example: a regional grocer with 18 stores faced 18 separate posting citations after a 2024 OSHA programmed inspection sweep. A common misconception is that emailing the 300A to staff satisfies the posting rule. It does not, because the rule requires a physical, visible posting unless the workplace has no fixed location.
What “Conspicuous Place” Really Means
OSHA expects the 300A to sit alongside the
OSHA “It’s the Law” poster and other required notices. Break rooms, time clocks, and main entrances are typical locations. Posting it in a locked supervisor’s office does not meet the standard.
The consequence of a hidden post is the same as no post at all.
Tomas, a plant manager at a packaging facility, learned this when an OSHA compliance officer found the 300A taped inside the HR director’s office during a 2025 inspection, leading to an other-than-serious citation. The common misconception is that a single posting at corporate headquarters covers all branches. Each establishment needs its own.
Three Real-World Scenarios
Below are three named scenarios that show how Form 300A plays out under different conditions. Each follows the rule structure under 29 CFR 1904.
Scenario 1: Construction — Devon’s Roofing Crew
Devon runs a 28-employee residential roofing crew. During the year, two falls led to days away from work, one nail-gun puncture led to restricted duty, and one heat-illness case led to one lost day. He totals four recordable cases.
| Decision Point |
Outcome |
| Industry exempt? |
No, NAICS 238160 is not on Appendix A |
| E-file required? |
No, under 20 employees and not on Appendix B |
| Posting required? |
Yes, Feb 1–Apr 30 at the office trailer at each active job site office |
Scenario 2: Healthcare — James at Cedar Grove Nursing
James oversees safety at a 220-employee nursing home. He logs 18 recordable cases including 6 strain injuries, 4 needlestick exposures, and 2 respiratory illnesses tied to a confirmed work-related infection.
| Decision Point |
Outcome |
| Industry exempt? |
No, NAICS 623110 requires recordkeeping |
| E-file required? |
Yes, 220 employees and on Appendix A high-hazard list |
| Privacy concern? |
Yes, needlestick cases are privacy concern cases under 1904.29(b)(7) |
Scenario 3: Warehousing — Priya at Northstar Logistics
Priya is COO of a 300-employee distribution center under NAICS 493110. The center had 22 recordable cases, including one fatality from a forklift incident.
| Decision Point |
Outcome |
| Fatality reporting? |
Yes, called OSHA within 8 hours per 1904.39 |
| E-file required? |
Yes, 300, 301, and 300A under Appendix B |
| Certifier? |
Priya signs as COO under 1904.32(b)(4) |
Three Named Examples in Action
Example A: Maria, Cabinet Shop HR Manager
Maria handles 300A duties for a 60-employee shop. Her goal is to post on time and avoid citations. She pulls 7 recordable cases from her Form 300 log, computes 124,800 total hours worked, lists NAICS 337110, and posts the signed 300A at the breakroom on January 28. She does not e-file because her NAICS is not on the high-hazard list, but she keeps the records on file for five years.
Example B: Tomas, Packaging Plant Manager
Tomas oversees a 145-employee corrugated box plant under NAICS 322211, which sits on Appendix B. His goal is full compliance with the expanded e-filing rule. He certifies the 300A, posts it at the time clock and break room, and uploads the 300, 301, and 300A data through ITA on February 22, well before the March 2 deadline.
Example C: Aisha, Multi-Site Restaurant Chief Compliance Officer
Aisha runs compliance for a 12-location quick-service chain. Most NAICS 722513 locations are partially exempt under Appendix A. Her goal is to confirm exempt status without skipping fatality and severe-injury reporting. She does not post or e-file 300A but keeps an internal injury log and trains each general manager on 1904.39 reporting duties.
Mistakes to Avoid
Recordkeeping mistakes drive a steady stream of OSHA citations every year. Here are the most common ones.
- Counting first-aid-only cases as recordable, which inflates totals and may trigger unwarranted scrutiny
- Letting the safety coordinator sign instead of an executive, which voids the certification under 1904.32(b)(4)
- Posting Form 300 by mistake instead of Form 300A, which exposes private medical details and breaches privacy rules
- Excluding temporary workers under day-to-day supervision, which understates totals and may bring a citation
- Capping days away above 180, which violates the cap rule in 1904.7(b)(3)(viii)
- Forgetting to e-file by March 2, which now carries an other-than-serious citation under 1904.41
- Posting a single 300A at headquarters for multi-site companies, which fails the per-establishment rule
- Treating salaried employees as 2,000 hours each when actual payroll data exists, which distorts the rate
- Mixing illness categories, such as logging hearing loss as an injury rather than under M5
- Skipping the post entirely after a zero-injury year, which is still a citable failure
Do’s and Don’ts
Do’s
- Do reconcile your Form 300 log against payroll, workers’ compensation, and incident reports before transferring totals
- Do post from February 1 through April 30 at every establishment, even at remote satellite offices
- Do keep your 300, 301, and 300A records on file for five years under 1904.33
- Do confirm your NAICS code each year because reclassification can change your e-filing duty
- Do train a backup certifier so a vacation or illness does not cause a missed deadline
Don’ts
- Don’t list employee names on the publicly posted 300A because it captures only totals, not personal data
- Don’t include first-aid cases such as a Band-Aid for a paper cut on your log
- Don’t post the form in a locked office, server room, or supervisor-only area
- Don’t assume your industry is exempt without checking Appendix A directly
- Don’t leave the certification box blank, because an unsigned form fails the rule outright
Pros and Cons of Strong 300A Compliance
Pros
- Strong compliance reduces civil penalty exposure, which now reaches $165,514 per willful violation
- It builds employee trust and supports protected reporting under Section 11(c) of the OSH Act
- It produces clean data your insurance carrier may use to negotiate workers’ compensation premium credits
- It surfaces hazard trends early so you can fix them before another worker is hurt
- It positions your company well during programmed inspections and customer audits
Cons
- It demands time from HR, safety, and finance teams, especially in multi-site operations
- It exposes establishments to public ITA data, which competitors and unions can review
- It can drive higher experience modification rates if injury counts rise year over year
- It increases administrative cost for borderline-exempt employers who must verify status each year
- It creates legal risk if recordkeeping conflicts with workers’ compensation or HIPAA disclosures
Recordkeeping Enforcement Cases Worth Knowing
Two precedents shape current 300A enforcement. In
AKM LLC v. Secretary of Labor (the
Volks II decision), the D.C. Circuit limited OSHA’s ability to cite recordkeeping violations beyond the six-month statute of limitations under Section 9(c) of the OSH Act. OSHA later issued the
Recordkeeping NPRM and final rule clarifying that the duty to record continues for five years, though the Trump administration’s 2017
Congressional Review Act resolution struck down that rule.
The plain-English meaning is that OSHA can still cite recent recordkeeping failures but cannot reach back years. The consequence is a tighter compliance window. A real example: a 2022 case where a manufacturer escaped older 300A citations because OSHA filed beyond the six-month window. The common misconception is that the five-year retention rule is gone. It is not, because retention under 1904.33 is separate from the citation statute.
FAQs
Do I have to post Form 300A if my company had zero injuries last year?
Yes. Posting is mandatory from February 1 through April 30 even with zero recordable cases, and the form simply shows zeros across each row.
Do partially exempt small businesses still have to post?
No. Establishments in industries listed under Appendix A to Subpart B of 29 CFR 1904 do not post 300A, but they still must report fatalities and severe injuries.
Do I need to e-file Form 300A every year?
Yes. If your establishment falls under 1904.41 thresholds, electronic submission through OSHA’s Injury Tracking Application is required by March 2 each year for the prior year’s data.
Do I include temporary workers in my employee count?
Yes. Workers you supervise day to day count toward your average employee number and total hours worked, even when paid by a staffing agency.
Do I need to post a separate 300A for each location?
Yes. Each physical establishment with its own injury data needs its own posted 300A, because corporate-wide posting does not satisfy 1904.32.
Can a safety manager sign the certification?
No. Only an owner, corporate officer, the highest-ranking official at the establishment, or that official’s direct supervisor may certify the 300A.
Do first-aid cases go on Form 300A?
No. Only recordable injuries and illnesses meeting the 1904.7 criteria appear on the log and the summary, not minor first-aid cases.
Do State Plan states use the same Form 300A?
Yes. Most State Plan states accept federal Form 300A, although some impose stricter reporting deadlines and supplemental obligations.
Do I have to keep old 300A forms after the year ends?
Yes. Retention is five years following the calendar year covered, including the 300 log, 301 reports, 300A summary, and any privacy-case lists.
Can OSHA fine me for a missing 300A?
Yes. Other-than-serious recordkeeping citations reach $16,550 each in 2026, and willful or repeat violations can climb to $165,514 per violation.
Do remote or work-from-home employees count?
Yes. Remote workers count toward employee totals and hours, but injuries are recordable only when they meet the work-relatedness test in 1904.5.
Do I need to redact employee names on the public posting?
Yes. The 300A summary itself contains only totals and no names, but the underlying 300 log requires removal of names for privacy concern cases under 1904.29(b)(9).
