If you work in construction or general industry, you have almost certainly heard of OSHA 10 and OSHA 30. These two training courses are the most widely recognized safety training programs in the United States, yet confusion about what they are, who needs them, and what they actually provide is surprisingly common.
This guide breaks down both programs in plain language so you can determine which is right for your workforce, meet any regulatory requirements, and separate fact from fiction.
What Is the OSHA 10-Hour Course?
The OSHA 10-Hour Outreach Training Program provides entry-level workers with a broad awareness of common workplace hazards and their rights under OSHA. It covers the fundamentals of occupational safety and health, giving workers the knowledge to recognize and avoid hazardous conditions on the job.
Who is it for?
- Entry-level workers and new hires
- Laborers, helpers, and apprentices
- Anyone starting work on a construction site or in a general industry facility
- Workers in states or jurisdictions where OSHA 10 is required by law
Topics typically covered:
- Introduction to OSHA and worker rights
- Fall protection
- Electrical safety
- Personal protective equipment (PPE)
- Hazard communication (HazCom)
- Struck-by, caught-in/between hazards
- Health hazards in construction or industry
- Scaffolding and ladder safety (construction track)
The course is delivered over a minimum of 10 hours, typically spread across two days or available through authorized online providers. Instructors choose elective topics based on the industry and audience.
What Is the OSHA 30-Hour Course?
The OSHA 30-Hour Outreach Training Program is a more comprehensive course designed for workers with supervisory or safety responsibility. It goes deeper into hazard identification, OSHA standards interpretation, and workplace safety management.
Who is it for?
- Foremen, supervisors, and lead workers
- Project managers and superintendents
- Safety directors and safety officers
- Anyone responsible for enforcing safety on a job site or in a facility
- Business owners looking to understand their OSHA obligations
Topics typically covered (in addition to all OSHA 10 topics):
- OSHA recordkeeping requirements (300 logs)
- Safety and health management systems
- Ergonomics and material handling
- Confined space entry
- Crane and rigging safety
- Excavation and trenching
- Fire protection and prevention
- Welding and cutting (hot work)
- Fall protection systems in depth
- Stairways and ladders (expanded)
The course requires a minimum of 30 hours of instruction, typically completed over four to five days. Like the 10-Hour course, it can be delivered in person or through authorized online providers, but the in-person format is generally preferred for the depth of material and discussion it requires.
Side-by-Side Comparison
| OSHA 10-Hour | OSHA 30-Hour | |
|---|---|---|
| Audience | Entry-level workers | Supervisors, foremen, safety personnel |
| Duration | 10 hours (min.) | 30 hours (min.) |
| Depth | Awareness-level hazard recognition | In-depth standards interpretation and safety management |
| Typical Format | 2 days in-person or online | 4–5 days in-person or online |
| DOL Card | Yes — 10-Hour card | Yes — 30-Hour card |
| Industry Tracks | Construction or General Industry | Construction or General Industry |
Construction vs. General Industry
Both the 10-Hour and 30-Hour programs come in two versions: Construction and General Industry. The course you take should match the environment where you work.
Construction courses focus on hazards specific to building and infrastructure projects — fall protection, scaffolding, excavation, crane operations, steel erection, and similar topics. This is the version required in most state and local mandates.
General Industry courses cover hazards common in manufacturing, warehousing, healthcare, and other facility-based settings — machine guarding, lockout/tagout (LOTO), permit-required confined spaces, process safety management, and more.
If your workers split time between construction sites and permanent facilities, the construction track is typically the safer choice, since it covers the higher-risk environment. However, some employers require both.
Who Can Teach OSHA 10 and OSHA 30?
Only OSHA-authorized outreach trainers can deliver these courses and issue DOL cards. To become authorized, a trainer must complete a course through the OSHA Training Institute (OTI) or one of its Education Centers:
- OSHA 500 — Trainer Course in Occupational Safety and Health Standards for the Construction Industry
- OSHA 501 — Trainer Course in Occupational Safety and Health Standards for General Industry
Authorized trainers must also maintain their credentials by teaching the course regularly and completing refresher training. If someone offers you an OSHA 10 or 30 and they are not an OSHA-authorized trainer, the DOL card will not be valid.
Tip:You can verify an authorized trainer through OSHA's online database. If a training provider cannot show you their OSHA authorization number, that is a red flag.
State and Local Requirements
OSHA itself does not require workers to complete OSHA 10 or OSHA 30 training. These are voluntary programs at the federal level. However, several states and municipalities have enacted their own laws mandating outreach training:
- New York City — Local Law 196 requires all workers on NYC construction sites (where a Site Safety Plan is required) to complete OSHA 10, and site safety managers, coordinators, and supervisors must hold OSHA 30. This has been fully enforced since 2020.
- Connecticut — Requires OSHA 10 for all workers on state-funded construction projects.
- Missouri — Requires OSHA 10 for workers on public works projects over a certain dollar threshold.
- Nevada — Requires OSHA 10 for construction workers, with OSHA 30 for supervisors.
- New Hampshire, Massachusetts, Rhode Island — Various requirements for public construction projects.
Even in states without formal mandates, many general contractors and project owners require OSHA 10 or OSHA 30 as a condition of working on their sites. It has become a de facto industry standard, particularly on commercial and industrial projects.
The DOL Card: What It Is (and Is Not)
Upon completing an OSHA 10 or OSHA 30 course, participants receive a Department of Labor (DOL) wallet card. This card is the official proof of completion.
Key facts about the DOL card:
- Cards are issued by OSHA, not by the trainer or training company. The trainer submits a request to OSHA after the course is completed.
- It typically takes 6 to 8 weeks to receive the physical card in the mail. In the interim, the trainer can provide a temporary completion certificate.
- DOL cards do not expire — there is no official expiration date stamped on the card.
- However, many employers, general contractors, and project owners require workers to refresh their training every 3 to 5 years. Some jurisdictions require the same.
- Replacement cards can be requested through the authorized trainer who originally submitted the training record.
Common Misconceptions
Misconception #1: "OSHA 10/30 is a certification."
It is not. OSHA 10 and OSHA 30 are awareness-level training programs, not certifications. There is no exam to pass and no credential to maintain. The DOL card confirms you attended the training — it does not certify competency. True safety certifications include credentials like the CSP (Certified Safety Professional), CHST (Construction Health and Safety Technician), and ASP (Associate Safety Professional), which require education, experience, and passing a proctored exam.
Misconception #2: "OSHA requires me to take OSHA 10 or 30."
Federal OSHA does not mandate outreach training. The requirement comes from state or local laws, or from employers and general contractors who set it as a site access condition. The distinction matters because OSHA will not cite you for lacking a DOL card — but you may be removed from a job site by the GC.
Misconception #3: "My DOL card expired."
DOL cards do not have an expiration date. However, employers and project owners commonly impose a 3- to 5-year refresher requirement. If someone tells you your card is expired, they are likely enforcing a company or project policy — not a federal OSHA rule.
How to Choose: OSHA 10 or OSHA 30?
The right choice depends on the worker's role and responsibilities:
- Choose OSHA 10 if the worker is in a non-supervisory role and needs baseline hazard awareness. This is the standard for laborers, tradespeople, and new hires entering the field.
- Choose OSHA 30 if the worker has supervisory responsibility, manages safety on site, or needs a deeper understanding of OSHA standards. This is typical for foremen, superintendents, project managers, and dedicated safety personnel.
When in doubt, check with the general contractor or project owner. They will specify which level of training is required for site access. If you are bidding on work in a municipality with mandated requirements (like New York City), verify compliance before mobilizing your crew.
Need OSHA Training for Your Team?
Cross Safety Management provides OSHA 10 and OSHA 30 training through authorized instructors. We also build complete safety training programs tailored to your industry and workforce.
Get Started