The OSHA 10 vs OSHA 30 question comes up for almost everyone trying to get onto a commercial site, usually phrased as “which one do I actually need?” The short answer: the 10 is for workers, the 30 is for anyone with responsibility for other people, and which one you need is decided by the site or the state, not by you.
This page covers the real differences, who each one is for, what they cost and how long they take, and one thing about expiry that a lot of people get wrong.
The short version
| OSHA 10 | OSHA 30 | |
|---|---|---|
| Length | 10 hours | 30 hours |
| Intended for | Entry-level workers | Supervisors, foremen, lead hands, safety-responsible roles |
| Typical cost (online) | Roughly $60–90 | Roughly $160–200 |
| Depth | Hazard awareness and recognition | Awareness plus managing and controlling hazards |
| Card | Plastic DOL card, arrives by mail | Same |
| Who requires it | Many commercial sites; some states by law | Often required for supervisory roles and larger contracts |
Costs vary by provider and change; treat those figures as a rough guide and check current prices with an authorised trainer.
What each course actually covers
OSHA 10 is awareness training. It covers the Focus Four hazards that account for most construction deaths — falls, struck-by, caught-in/between and electrocution — plus personal protective equipment, health hazards and your rights as a worker. The point is that you can recognise a hazard and know you are allowed to refuse unsafe work.
OSHA 30 covers the same ground and then adds the parts that matter when you are responsible for other people: managing safety and health programmes, more depth on scaffolds, cranes, excavations, materials handling, fire protection, and the employer’s obligations. It is designed for someone who has to make a call, not just spot a problem.
Which one do you actually need?
- New to the trade, applying for labourer or helper roles — OSHA 10. On a lot of commercial sites it is the minimum to get through the gate.
- Journeyman or experienced tradesperson — OSHA 10 usually satisfies the site requirement, but the 30 starts to be worth having.
- Foreman, lead hand, or anyone signing off on others’ work — OSHA 30. Many contracts require it for supervisory roles.
- Applying for public or larger commercial contracts — check the contract. Some specify OSHA 30 for a proportion of site staff.
- You already have the 10 and want to move up — take the 30. You do not need to retake the 10, and the 30 supersedes it in practice.
Some states legislate this directly rather than leaving it to the site — New York, Nevada, Missouri, Connecticut, Rhode Island and others have their own requirements, and the details differ and change. Check your state and the specific contract rather than relying on a general article.
Construction or General Industry?
This trips up more people than the 10-versus-30 question. Both courses come in two versions:
- OSHA 10/30-Hour Construction — building sites, civils, residential and commercial construction
- OSHA 10/30-Hour General Industry — plants, factories, warehouses, manufacturing
If you work in a plant as a maintenance electrician, the General Industry version is usually the one wanted. If you are on building sites, take Construction. Postings often specify which, and turning up with the wrong one is a real and avoidable problem. Our industrial and maintenance electrician guide covers where this distinction bites.
Does an OSHA card expire?
This is the part people get wrong in both directions. OSHA outreach cards do not carry a federal expiry date. A card issued in 2019 is technically still a valid card today.
But that is not the whole picture. Many employers, sites, unions and states impose their own currency requirement — commonly five years, sometimes less — and will ask you to retake it regardless of what the card says. Some states legislate refresher intervals.
What this means for your resume: always write the year you earned it. “OSHA 30-Hour Construction — 2025” lets the reader apply their own rule. Writing it undated invites the assumption that it is old.
How to put it on your resume
CERTIFICATIONS OSHA 30-Hour Construction - 2025 ...or, if you hold the 10: CERTIFICATIONS OSHA 10-Hour Construction - 2025 Write it exactly that way. Not "OSHA certified", not "OSHA30", not "OSHA safety course". Screening software matches the real name.
Spell it the way the Department of Labor spells it. Automated screening matches on the real course name, and “OSHA certified” matches nothing. More on this in how to list certifications on a resume.
Where to take it
Only OSHA-authorised trainers can issue the Department of Labor card. Online courses through authorised providers are legitimate and are how most people take it; the card is mailed to you and typically arrives within a few weeks.
Two things to watch. First, check the provider is authorised through the official OSHA Outreach Training Program before paying. Second, be wary of anything advertising an instant card or same-day download — the physical DOL card takes time to arrive, and a course promising to bypass that is not issuing the real thing. Verify current requirements and authorised providers on OSHA’s own site.
Is it worth paying for yourself?
If an employer will pay, let them. If you are job hunting, the 10 is one of the cheapest things you can do to change which jobs you are eligible for — not just how your resume reads. On many commercial sites, no card means no entry, so it is the difference between being considered and not.
The 30 is a bigger spend and only pays off if you are moving toward supervision or a contract that requires it. Getting it speculatively as a labourer rarely changes anything.
Frequently asked questions
Does OSHA 30 include OSHA 10?
Not literally, but it covers the same material in more depth. You do not need both, and holding the 30 makes the 10 redundant.
Can I upgrade from 10 to 30?
There is no formal upgrade — you take the 30 as its own course.
Is an online OSHA card as good as in person?
Through an authorised provider, yes; it is the same DOL card.
How long until I get the card?
Usually a few weeks by mail. Most providers issue a completion certificate immediately, which many employers accept in the meantime.
Do I need OSHA for warehouse work?
Often not required, but General Industry is the relevant version if you take it.
Related guides
Where OSHA sits on the page: how to list certifications on a resume. Trade-specific certification requirements: construction, electrical, welding, equipment operation. Starting out with no cards at all? See resume with no experience.
If you would rather not write it yourself
The card itself is one line on a resume. Everything around it is where the real work is, and the guides linked above cover that.
Do it yourself. A resume builder handles the single-column formatting that application software wants, which is the fiddly part. The content above is what actually persuades, and that part is yours.
Pay someone to write it. Worth it mainly if you are moving into a safety officer, foreman or superintendent role where the resume has to argue about incident rates and crew sizes. If you go that route, Resumeble is a US-based writing service – where the writer sits matters on trades work, because someone unfamiliar with the trade flattens your specifics into generic phrasing. If you do, the code HARDHAT10 takes 10% off. Expect to be asked for your numbers either way, so do that homework first regardless of which route you take.
Disclosure: the Resumeble link above is an affiliate link. If you buy through it we earn a commission at no extra cost to you, which is how this site stays free. See our affiliate disclosure.