OSHA 10 vs. OSHA 30: Comparing key differences between the two courses

Safety training provides construction workers with the skills and knowledge they need to protect themselves and their crews on jobsites. The Occupational Safety and Health Administration (OSHA) offers both 10-hour and 30-hour courses in their Outreach Training Program that teach workers these skills.

This guide breaks down OSHA 10 versus OSHA 30, including the topics each training covers and who should take each course. It also answers common questions about OSHA compliance and OSHA cards.

What are OSHA 10 and OSHA 30?

OSHA 10 and OSHA 30 are training courses that focus on occupational health and safety, hazard recognition, and injury prevention. Here’s the difference between the two:

• OSHA 10 is a 10-hour course that teaches entry-level workers and laborers skills to keep themselves safe.
• OSHA 30 is a 30-hour course that covers everything in OSHA 10, plus setting up safety programs, running inspections, and handling the legal and managerial responsibilities of keeping a whole crew safe. This is meant for higher-level workers.

Once participants have completed either program, they receive a Department of Labor (DOL) card, often called an OSHA card or a wallet card, as proof of course completion. Contractors and state laws frequently require workers to carry this card to get access to active jobsites.

Is OSHA outreach training required?

OSHA outreach training is voluntary at the federal level. However, state laws, public works rules, and general contractor (GC) contract terms may make the courses mandatory for certain jobs.

Several states require OSHA training on public works projects, including the eight below. Nevada is the outlier: it requires OSHA 10 for workers and OSHA 30 for supervisors on every construction site, public or private, within 15 days of hire:

• Connecticut
• Massachusetts
• Missouri
• Nevada
• New Hampshire
• New York
• Rhode Island
• West Virginia

Many general contractors also require OSHA 10 for laborers and OSHA 30 for supervisors before allowing personnel to access jobsites. New York City enforces Site Safety Training (SST) requirements under Local Law 196. It issues SST cards for workers and supervisors, which are regulated separately from OSHA outreach cards.

What is the difference between OSHA 10 vs. OSHA 30 certification?

The clearest difference between OSHA 10 and OSHA 30 is the course length and intended audience, which influences depth. Both courses cover workplace safety topics, but OSHA 30 provides substantially more instruction and focuses on supervisory roles.

Here’s a quick side-by-side comparison:

What does OSHA 10 cover, and who is it for?

OSHA 10 attendees focus on individual safety, building foundational awareness around construction hazards. The course introduces:

• OSHA standards: What the government says is legal and safe on a construction site, like workers needing fall protection when working on a roof or platform six feet or higher above the ground
• Worker rights: What workers are legally allowed to do if something feels unsafe, like asking for proper personal protective equipment (PPE) without being punished
• Hazard recognition: What the Focus Four hazards are (falls, electrical hazards, struck-by accidents, and caught-in or caught-between hazards) and how to identify them before they cause an accident
• Safe work practices: What steps to take to do a job properly without getting hurt, like maintaining three points of contact on a ladder

What does OSHA 30 cover, and who is it for?

OSHA 30 participants learn more about worker safety topics, cover a wider range of worksite hazards, and understand broader compliance responsibilities for bosses and leaders. In addition to general awareness, OSHA 30 addresses topics like:

• Health and safety management: How to legally set up a company-wide safety program, run daily toolbox talks, and handle OSHA inspectors
• Advanced hazard control: How to handle major risks from a management and structural planning perspective, including writing a fall protection plan or designating a competent person to inspect scaffolding before every shift
• Accident investigation: What steps to take if someone does get hurt, how to interview witnesses, and how to write a root-cause report so it doesn’t happen again
• Heavy equipment and specialized operations: How to handle site operations like crane safety, multistory steel erection, and complex demolition

Industry versions

Both OSHA 10 and OSHA 30 offer separate versions for different industries. Contractors should choose the version that matches each employee’s real job duties on a case-by-case basis:

• Construction versions focus on workplace safety issues specific to construction jobsites, covering things like electrical safety, excavation work, and struck-by risks.
• General industry versions cover hazards more commonly associated with manufacturing, warehouse work, or maintenance operations.

Delivery format

Workers can take either course online or in person, as long as an OSHA-authorized trainer runs it. Some employers use online OSHA training to simplify scheduling across crews and jobsites. Others prefer classroom instruction for group training sessions.

One practical consideration is timing. Workers often receive proof of completion shortly after finishing the course, but the official plastic DOL card can take several weeks to arrive. If a GC requires OSHA cards before crews can mobilize, contractors must account for processing time during workforce and construction planning.

How long are OSHA 10 and OSHA 30 cards valid?

OSHA outreach cards don’t have a federal expiration date. Once a worker completes OSHA 10 or OSHA 30, the card stays valid under federal OSHA rules. However, project requirements and state rules often carry different standards. In Connecticut, an OSHA 10 card issued more than five years before a public works project starts does not count as proof of compliance. New York City’s SST cards must be renewed every five years, which requires refresher training. Some owners and GCs also independently refuse cards older than five years, regardless of the federal rule.

Many contractors take a practical approach and follow the strictest requirements attached to the project, contract, or jurisdiction. Companies should verify current requirements before assigning personnel to a jobsite.

Keep OSHA training records organized with Miter

Choosing the right OSHA training is just the first step. Contractors also need accurate documentation and ongoing safety reinforcement because initial OSHA training may quickly fade from memory and isn’t always enough to protect against changing jobsite hazards. Documentation provides essential legal defense and proof of compliance during inspections. And daily safety reinforcement prevents accidents and builds a strong safety culture.

Miter Learning Management Software (LMS) helps companies organize training records and stay compliant. Miter tracks certifications earned in the platform alongside certifications issued elsewhere, so you get a running view of which are current, which are expiring, and which are missing, with automatic reminders before one lapses.

Safety Passport lets a company create a public, read-only page and QR code for each employee. It shows the certification types the company has chosen to share, including active and expired certifications and any attached proof files. Once enabled and set up, a general contractor can scan the code to view that information without waiting for email or paper records.

Once crews finish training with an OSHA-authorized instructor, Miter stores and manages the records in one place.

Frequently asked questions

Is OSHA 10 required before OSHA 30?

No, a worker can enroll directly in OSHA 30 without taking OSHA 10 first. Training hours also don’t stack. A carpenter who already holds OSHA 10 and later becomes a foreman can’t add 20 hours to the 10 hours of training they completed in OSHA 10. They’re distinct programs.

Does OSHA 30 cover OSHA 10?

OSHA 30 includes many foundational concepts covered in OSHA 10 and expands on them with more detailed instruction. However, OSHA treats the courses as unique training programs. Completing OSHA 30 doesn’t mean a participant also earns OSHA 10.

Does completing OSHA 10 or OSHA 30 make someone OSHA certified?

No, OSHA outreach courses aren’t professional safety certifications. While many people use terms like “OSHA certifications” or “OSHA-certified,” the courses themselves don’t grant professional certification credentials. OSHA 10 and OSHA 30 provide a DOL course-completion card.