If you are sorting out training for your crew, the quick answer is simple. OSHA 10 is a 10-hour awareness course built for entry-level workers, while OSHA 30 is a 30-hour course built for supervisors and anyone carrying safety responsibility. The OSHA 10 vs OSHA 30 differences come down to audience, depth, and hours.
Both courses belong to OSHA’s Outreach Training Program, and both end with a Department of Labor (DOL) wallet card. That card gets called a “certification” constantly, and it is not one. Nothing here is legal advice, so treat the state and local rules below as a starting point and check your own jurisdiction before you build a training matrix.
Last updated: October 2026
Table of Contents
OSHA 10 vs OSHA 30 Differences at a Glance
| What you are comparing | OSHA 10 | OSHA 30 |
|---|---|---|
| Primary audience | Entry-level workers, laborers, apprentices, new hires | Foremen, superintendents, crew leads, safety officers, owners |
| Contact hours | 10 | 30 |
| Minimum calendar days | 2 | 4 |
| Daily hour cap | Up to 7.5 hours per day | Up to 7.5 hours per day |
| Standards covered | 29 CFR 1926 (Construction) or 29 CFR 1910 (General Industry) | Same choice of track, taught in far greater depth |
| Classroom makeup | Required topics only, plus a short elective block | Required, elective, and optional topic blocks |
| Supervision and management content | Brief mention only | Core required material |
| Accident investigation and corrective action | Not covered in depth | Covered, including program management |
| Final evaluation | 70 percent passing score, up to 3 attempts | 70 percent passing score, up to 3 attempts |
| Credential issued | DOL student course completion card, issued within 90 days | DOL student course completion card, issued within 90 days |
| Federal requirement | None, it is voluntary | None, it is voluntary |
| Where it is commonly demanded | General contractor site access rules, public works bids, union programs | State statutes, city rules, supervisory role requirements |
What Is OSHA 10 Training?
OSHA 10 is the entry-level course in the Outreach Training Program, a voluntary program OSHA runs with participating training providers and the U.S. Department of Labor. Ten contact hours, spread over at least two calendar days, taught in the classroom or online through an OSHA-authorized provider.
The course exists to give a new worker the vocabulary and habits to spot hazards before they get hurt. It introduces workers’ rights under the OSH Act, employer responsibilities, and the difference between a hazard, a violation, and an injury that has to be recorded.
OSHA 10 comes in two tracks, and picking the wrong one is the most common mistake I see. The Construction track is built around 29 CFR 1926 and the Focus Four hazards: falls, electrocution, struck-by, and caught-in-or-between. The General Industry track follows 29 CFR 1910 and covers manufacturing, warehousing, healthcare, and other settings where the hazard profile is different.
Workers routinely take OSHA 10 without ever sitting an exam, but there is a final evaluation. You need a 70 percent score, and providers allow a maximum of three attempts. Pass it and the trainer issues a DOL student course completion card within about 90 days.
What Is OSHA 30 Training?
OSHA 30 is the longer course in the same program, and it is aimed squarely at people who direct other people’s work. Thirty contact hours over at least four calendar days, because no more than 7.5 hours can be counted in a single day.
The content is the OSHA 10 material taught properly, plus the parts OSHA 10 has no room for. In the Construction version, roughly 14 hours are required topics, 12 are electives, and 4 are optional. The General Industry version splits differently: about 12 required hours, 10 elective, and 8 optional.
That extra 20 hours is where the difference lives. OSHA 30 spends real time on supervision, on running an accident investigation, on writing corrective actions that hold up, and on building a safety program that survives turnover. It is closer to a management course than a worker awareness course.
Employers put OSHA 30 on job descriptions for foremen, superintendents, safety coordinators, and small-business owners for a practical reason. Those are the people who get held to a standard of care when something goes wrong, and the card is the cheapest evidence that they were trained on it.
Training Depth and Duration
OSHA 10 spreads 10 hours across two days, which most online learners finish in a week or so. OSHA 30 takes three times the classroom time, and people usually budget two to four weeks of part-time study or four full days in person.
What OSHA 30 Adds That OSHA 10 Leaves Out
OSHA 30 does not skip the OSHA 10 material. It repeats it and then keeps going. On a construction site, that means deeper work on the Focus Four, plus scaffolding, excavation competent person duties, and fall protection systems rather than a general mention of them.
It also adds material OSHA 10 never touches: how to run a job briefing that actually works, how to document an incident, how to investigate root causes instead of blaming the person closest to the error, and how to hold a crew accountable without creating a culture where nobody reports anything.
Neither course replaces the training a specific standard requires. Hazard communication, bloodborne pathogens, lockout tagout, confined space entry, powered industrial truck operation, and fall protection each have their own required training. Our lockout tagout procedure guide covers one of those in detail, and it sits alongside outreach training rather than inside it.
Topics and Workplace Applications
OSHA 10 spends most of its hours on hazard recognition: what a hazard is, how it looks in your workplace, and what to do in the first minute after you find one. Add worker rights, the employer’s duty to provide a safe workplace, and how to report a hazard or file a complaint without losing your job.
That is enough for someone who is walking onto a site for the first time. It is not enough for the person who has to write the plan, train the crew, and answer for the outcome.
OSHA 30 layers program management on top. Supervisors learn how to build a safety program with written procedures, how to run an investigation after an injury or near miss, and how to select corrective actions that address the cause instead of the symptom. Managers get the budget and staffing conversation, because a safety program nobody funds is a poster on a wall.
Worked example. A laborer who spots an unguarded floor opening gets the OSHA 10 answer: report it, stay clear, ask for control. A foreman in the same spot is expected under OSHA 30 to stop the work, document the condition, verify the fix, and record what happened. Same hazard, completely different job description.
Another example. A hospital housekeeping supervisor and a residential framing foreman both hold OSHA 30 cards, but their course content is not the same. The supervisor’s course follows General Industry standards such as bloodborne pathogens and hazard communication. The foreman’s follows Construction standards, including excavation and scaffold competent person rules.
Who Should Take Each Course?
Match the course to what the person does on Monday morning, not to their job title on the offer letter.
- New laborers, apprentices, and entry-level trades start with OSHA 10. It is the orientation course and it is what most general contractors ask for before badge issuance.
- Warehouse, manufacturing, and distribution workers take the OSHA 10 General Industry version. Machine guarding, forklifts, and ergonomics are the hazard set that matters there.
- Healthcare and custodial staff also take the General Industry version, with bloodborne pathogens and infection control as the anchor topics.
- HVAC technicians, electricians, and pipefitters take OSHA 10 first. Electrical safety and lockout tagout show up in the curriculum, but the deeper standard-specific training still has to happen separately.
- Foremen, lead hands, and crew leads take OSHA 30. This is the group that runs briefings, fills out reports, and answers for the work of others.
- Superintendents, project managers, and safety coordinators take OSHA 30, and usually benefit from adding the OSHA 500 or OSHA 501 trainer course if they want to teach in-house later.
- Small-business owners take OSHA 30. When you are the person signing the inspection response, you want the management content rather than the awareness version.
A practical rule I give clients: if the person writes a safety plan, investigates an incident, or signs off on corrective action, they need OSHA 30. Everyone else starts at OSHA 10.
Requirements, Certification, and Legal Status
Here is the part that trips people up. Federal OSHA does not require you to hold an OSHA 10 or an OSHA 30 card. There is no OSHA certification, and no OSHA-issued license that lets you practice safety work. What you receive is a DOL student course completion card showing that a named student completed a course taught by a named authorized trainer.
Requirements come from somewhere else. States with their own OSHA-approved plans, cities, general contractors, public works bid documents, union agreements, and licensing boards set their own conditions. Nevada, for example, requires a supervisor on a public works contract to hold OSHA 30, and it has to be in hand within 15 days of hire. Connecticut ties prevailing wage work to refresher training when the card is more than five years old. New York City runs its own Site Safety Training requirement, and Philadelphia contractors under Local Law 196 need a current OSHA 30 for license renewal.
Check the rules for where the work happens, not where the worker lives. A resident of a state-plan state working on a federal project follows federal rules, and the reverse is also true often enough to be worth confirming in writing.
Two housekeeping details catch people out. The physical card usually arrives within 90 days, so keep the provider’s completion certificate for site access in the meantime. And a lost card can generally be replaced only once, with a five-year limit on the original class date. Lose it after that window and you retake the course.
Before you pay anyone, verify the provider. OSHA publishes a list of authorized Outreach Training providers and a trainer lookup on OSHA.gov, and an authorized trainer should be able to produce a current trainer card with an expiration date. A site promising a “government OSHA certification” with no card in the pipeline is not what you think it is.
Employers also have recordkeeping duties that sit alongside this. If injuries and illnesses are being logged, the OSHA 300 log guide covers how those records are filled in under 29 CFR 1904.
Which Should You Choose?
The OSHA 10 vs OSHA 30 Differences That Actually Decide It
Three questions settle it for almost everyone. If the worker is new and does not direct others, they need OSHA 10. If they supervise, inspect, or sign off on corrective action, they need OSHA 30. If your state, city, prime contractor, or union specifies a course on the bid documents, that specification wins over anything on this page.
For general workforce orientation, build OSHA 10 into onboarding. Every new hire, every new sub, every returning worker after five years away. It is fast, cheap relative to an incident, and it is the card your general contractor will ask to see at the gate.
For supervisory responsibility, put OSHA 30 on the role description and reissue it on a schedule you set yourself, since the card does not expire federally. Nevada-style rules and union agreements give you a defensible refresh window; five years is a common choice.
For construction and high-risk environments, take the Construction track, not General Industry. A General Industry card will not satisfy a 1926 site rule, and finding that out at the gate costs you a morning and a trip to the training provider.
For a growing company, build a two-tier program. Tier one is OSHA 10 for everyone. Tier two is OSHA 30 for anyone with a title that includes lead, foreman, supervisor, manager, or safety. Tier three, once you are running enough in-house training to justify it, is the OSHA 500 for trainers and the OSHA 501 for course developers, which requires OSHA 510 as a prerequisite along with documented experience.
For a small crew where the owner is the only supervisor, the honest answer is OSHA 30 for you and OSHA 10 for everyone else. The course is long, and the material is aimed at decisions you will actually be making.
Frequently Asked Questions
Do I need to take OSHA 10 before OSHA 30?
No, and most people do not. OSHA 30 repeats the OSHA 10 material and expands on it, so the sequence is not required. Some employers and training providers still prefer you start with OSHA 10 because it gives you the baseline vocabulary, and a few union programs build them in sequence. If your state or your prime contractor names a specific order, follow that instead of the general guidance.
Is OSHA 30 harder to pass than OSHA 10?
The passing bar is identical: 70 percent, with a maximum of three attempts. What changes is how much material you are being tested on. OSHA 10 is mostly hazard recognition, while OSHA 30 adds supervision, investigation, and program management content that people rarely see elsewhere. Workers who skim the OSHA 10 often find OSHA 30 noticeably heavier for that reason.
Do OSHA 10 and OSHA 30 cards expire?
Federally, no. The Department of Labor card does not carry an expiration date, and OSHA does not require renewal. That is not the whole story, though. States, cities, contractors, and union agreements set their own refresh windows, Nevada requires OSHA 30 within 15 days of hire for covered supervisors, and Connecticut ties prevailing wage work to a five-year refresher. Check your local rules before assuming a card is current.
Is OSHA training mandatory under federal law?
Federal law does not require an Outreach card. It does require employers to train employees on the hazards of their jobs under standards such as hazard communication, lockout tagout, and fall protection. So the 10 and 30 card is a voluntary credential, while standard-specific training is often a legal obligation. State plans, city ordinances, licensing rules, and bid documents frequently make an Outreach card effectively mandatory anyway.
What is the difference between OSHA 30 and OSHA 40?
They serve different purposes entirely. OSHA 30 is a 30-hour Outreach course for supervisors, taught under 29 CFR 1910 or 1926 depending on the track. OSHA 40 is a 40-hour HAZWOPER course for workers who respond to hazardous waste releases, cleanups, or emergencies, and it carries its own training and certification structure. An OSHA 30 card does not qualify anyone for HAZWOPER work.
Is every OSHA 10 course the same?
No. The subject matter is defined, but the delivery varies widely between the Construction track under 29 CFR 1926 and the General Industry track under 29 CFR 1910, and the provider makes the rest of the call. That means online versus in-person, instructor experience, case studies, and how much practical discussion you get all differ. Verify the provider appears on OSHA’s authorized list before you pay anyone.
Conclusion
Start with the role, not the catalog. OSHA 10 for anyone new to the work or the site, OSHA 30 for anyone supervising, inspecting, or signing off on corrective action, and the Construction track whenever the work falls under 29 CFR 1926.
Then do the unglamorous part: check the state, city, and bid requirements for the specific project, and confirm the provider is on OSHA’s authorized list before anyone pays. That is the whole decision. The rest is just scheduling.