OSHA 10 vs. OSHA 30: what the cards mean
OSHA 10 and OSHA 30 are both safety-training courses from OSHA's voluntary Outreach Training Program, and the core difference is right in the names: one is a 10-hour course, the other is a 30-hour course. OSHA 10 covers the basics for workers on the ground, while OSHA 30 goes deeper and is built for supervisors, foremen, and anyone responsible for other people's safety.
If you've been asked to show a card before stepping onto a job site, here's what these courses actually are, who typically takes each one, and why those little plastic cards get requested so often.
What OSHA outreach training actually is
OSHA — the federal Occupational Safety and Health Administration — runs the Outreach Training Program, a set of safety courses taught by OSHA-authorized trainers. You can take them in person or online, and there are separate versions for construction, general industry, and a few other fields. When you finish, you receive a completion card issued through the U.S. Department of Labor — the wallet-size plastic card people mean when they say "I've got my OSHA 10."
One thing worth being clear about: this is an orientation, not a certification. OSHA itself describes outreach training as voluntary. It teaches hazard awareness and workers' rights, but it doesn't replace the hands-on, job-specific training an employer provides. So while people often say "OSHA certified," the card is technically a course-completion card, not a license or certification.
OSHA 10: the basics, built for workers
OSHA 10 is ten hours of training aimed at entry-level and frontline workers. The construction version devotes its single biggest block of time to the hazards behind the most serious injuries in the trades — what OSHA calls the Focus Four: falls, electrocution, struck-by, and caught-in/between — plus personal protective equipment, health hazards, and your rights on the job, including how to raise a safety concern. It's the course most commonly taken by laborers, apprentices, and new hires, often once early in a career.
OSHA 30: the deeper course for supervisors
OSHA 30 covers the same ground and then keeps going — thirty hours that add more topics and more depth, with an emphasis on recognizing, preventing, and fixing hazards rather than just avoiding them. It's designed for people responsible for others' safety: foremen, superintendents, crew leads, and small-contractor owners who run their own jobs.
There's no rule that says a worker can't take the 30-hour course — plenty do, either to stand out or because they're aiming for a lead role. The extra twenty hours are simply geared toward the supervisor's side of the job: spotting problems across a site instead of just staying safe at your own station.
Why job sites ask to see the cards
At the federal level, the outreach program is voluntary — the card itself isn't what puts you in or out of compliance with OSHA's actual safety standards. In practice, though, many general contractors, project owners, and some localities expect to see a card before anyone works on their site, and a common pattern is OSHA 10 for workers and OSHA 30 for supervisors. Expectations vary by state, city, and contract, so check with the GC, the contract paperwork, or your licensing body rather than assuming.
A few practical things about the cards themselves:
- Many GCs write OSHA 10/30 expectations into their subcontract paperwork, right alongside insurance certificates.
- Some sites log card numbers at orientation, so having the physical card (or a clear scan) on hand speeds up your first day.
- If you lose a card, replacements typically go through the trainer or provider who taught your course — which can take a while, so a backup copy is worth having.
Where the card should live
The federal card doesn't carry an expiration date, but some employers, clients, and localities expect refresher training every few years — it's worth asking what your regular clients want. The bigger everyday risk is simpler: the card is small, and it tends to live in wallets, glove boxes, and junk drawers. Scan or photograph it the day it arrives.
A scan in CompliCloud sits alongside your insurance certificates, ready to share the moment a GC asks — and if a client expects refresher training on a schedule, a reminder keeps the date from slipping.
Common questions
Does an OSHA 10 or OSHA 30 card expire?
The Department of Labor card itself doesn't carry a federal expiration date. That said, some employers, clients, and localities expect refresher training every few years, so check what your site or contract asks for before assuming an old card will be accepted.
Is an OSHA 10 or 30 card the same as being "OSHA certified"?
Not quite. The card shows you completed an outreach course — OSHA calls it a completion card, not a certification or license. People say "OSHA certified" all the time, but there's no such credential in the outreach program.
Can I take OSHA 10 or OSHA 30 online?
Yes. OSHA-authorized online providers offer both courses, and you receive the same Department of Labor completion card as an in-person class. Just confirm the provider is OSHA-authorized before you pay.
Should I take OSHA 10 or go straight to OSHA 30?
It depends on your role. If you're on the tools, OSHA 10 is the usual starting point. If you run a crew — or plan to — OSHA 30 covers everything in the 10-hour course with more depth, and many supervisors go straight to it. If a specific job prompted the question, ask the GC which card they expect.
This guide is general information for US trades businesses, not legal or insurance advice. Requirements vary by state, locality and contract — confirm the specifics with your licensing body, your client’s contract, or your insurance agent.