Federal first aid rules require adequate supplies and trained responders whenever no clinic sits nearby, but no single kit model is mandated.
An “ANSI-compliant” sticker tells you less than most managers assume. Two separate questions sit behind workplace first aid kit requirements — what federal law forces you to provide, and what a voluntary consensus standard says a decent kit should contain — and blending them is how a business ends up with a tidy kit and a citation anyway.
OSHA sets an outcome. ANSI supplies a benchmark. Your hazard assessment decides the rest.
What Does OSHA Require For First Aid Supplies At Work?
OSHA’s general-industry rule asks for two things when no infirmary, clinic, or hospital is genuinely near: adequately trained first-aid personnel, and adequate first-aid supplies that are readily available. That is the whole of 29 CFR 1910.151(b) — an outcome, not a packing list.
“Near proximity” is left undefined. Employers judge it against emergency response time, site remoteness, worksite conditions, and the injuries the work can produce. A downtown office tower and a rural job site get measured by the same words and land in different places.
OSHA’s nonmandatory Appendix A points at ANSI Z308.1 contents as a workable baseline for small worksites, with the caveat most buyers skip: larger, multi-operation, unusual, or changing workplaces may need more kits, extra equipment, larger quantities, or different supply types.
OSHA’s 1910.151 medical services and first aid standard carries the trained-responder and adequate-supplies language in full. Logging, shipyard employment, marine terminals, longshoring, and construction each carry their own first-aid provisions, so the general-industry rule is not a full checklist in those trades.
| Requirement Source | Legal Status | What It Asks Of You |
|---|---|---|
| OSHA 29 CFR 1910.151(b) | Mandatory for general industry | Trained first-aid responders plus adequate, readily available supplies when no clinic or hospital is near |
| OSHA Appendix A to 1910.151 | Nonmandatory guidance | Names ANSI Z308.1 contents as a workable baseline for small worksites |
| ANSI/ISEA Z308.1-2021 | Voluntary consensus standard | Minimum kit contents, quantities, and container specs, split into Class A and Class B |
| Industry standards (logging, construction, shipyards, marine terminals, longshoring) | Mandatory in those sectors | Trade-specific first-aid provisions beyond the general-industry rule |
| State-plan OSHA offices and local rules | Can add obligations | Stricter or extra requirements layered on top of the federal baseline |
Workplace First Aid Kits: What Separates Class A From Class B
Class A kits cover injuries a low-hazard workplace actually produces — cuts, abrasions, minor burns. Class B kits carry more and heavier-duty supplies where serious injury is realistic.
ANSI/ISEA Z308.1-2021 is a voluntary consensus standard, not a federal mandate. It sets minimum contents, quantities, and minimum sizes or volumes, and classifies containers by portability, mountability, water resistance, and resistance to corrosion and impact. Both classes draw on the same treatment categories — major wounds, minor wounds such as cuts and abrasions, minor burns, and eye injuries; the split is how much sits in the box and how heavy-duty the contents are.
A retailer’s “ANSI-compliant” badge is not the standard. The exact assortments live in the standard’s own tables, sold through the ANSI Webstore — worth checking before you trust a product page summary.
Class never replaces a hazard assessment. Chemical exposure, electrical work, confined spaces, machinery, heat, or severe trauma each pull in supplies a general kit won’t cover: eyewash, burn care, bleeding-control gear, respiratory protection. If you’d rather start from built options than assemble one, our tested workplace first aid kit picks break down what each box actually contains.
From Hazard Assessment To A Stocked Kit
Compliance comes down to matching supplies to the injuries your site can realistically produce, then keeping them reachable, stocked, and staffed.
- Test the near-proximity claim. Time how long an ambulance actually takes, and confirm whether the nearest hospital treats workplace injuries during your shift hours.
- Walk the site. Note hazards, layout, headcount, shift coverage, and the injury types each work area could produce.
- Choose the class, then stage enough kits. Class A for ordinary hazards, Class B or supplemental gear where serious injury is plausible — and a kit within quick reach of every work area, not one locked cabinet for the whole building.
- Assign and train responders, then keep the kit alive. OSHA’s Best Practices Guide (OSHA 3317-06N) builds a program on management leadership and employee involvement, worksite analysis, hazard prevention and control, and safety and health training.
Recheck after any change in process, staffing, location, or hazard, and confirm whether your state-plan OSHA office, local rules, or a union contract adds requirements.
Common Questions
Does An ANSI-Compliant Kit Satisfy OSHA On Its Own?
No. ANSI/ISEA Z308.1-2021 is a voluntary consensus standard, not a federal rule, so a compliant kit covers one layer. OSHA separately asks whether supplies are adequate for your hazards and readily available, and whether trained responders are present when no clinic or hospital is near. A label alone proves none of that.
How Many Kits Does A Worksite Need?
No fixed number exists. The test is availability, not arithmetic: a worker should reach supplies in moments, from any work area, on any shift. Large buildings, spread-out grounds, and multi-shift operations usually need more kits and more restocking points than a single small shop.
Is An AED Required In Every Workplace?
No universal federal rule says so. OSHA’s best-practices guidance describes readily accessible supplies and equipment including bandages and automated external defibrillators, and treats an AED program as sound practice, but the general-industry standard does not require one in every business. State rules and specific industry standards can differ, so check yours.
Sources
- OSHA. “1910.151 — Medical Services and First Aid” Text of the general-industry requirement for trained responders and adequate, readily available supplies.
- OSHA. “Appendix A to 1910.151 — First Aid Kits” Nonmandatory guidance naming ANSI Z308.1 contents as a baseline for small worksites.
- ANSI. “Workplace First Aid Kits: ANSI/ISEA Z308.1-2021” Explains the standard’s scope, Class A and Class B categories, and container classifications.