OSHA 30 Practice Test FAQ

What is the difference between OSHA 10 and OSHA 30?

OSHA 10 is a 10-hour entry-level course for general construction workers. OSHA 30 is a 30-hour course aimed at supervisors, foremen, and anyone with safety responsibilities — it covers the same Focus Four hazards (falls, electrocution, struck-by, caught-in/between) in more depth, plus additional modules like excavations, scaffolds, health hazards, and confined spaces.

How many questions are on the OSHA 30 final exam?

Most OSHA-authorized training providers use a final exam of roughly 100 multiple-choice questions, with a typical passing score of 70% or higher. The exact number can vary by provider.

What topics are covered?

Our OSHA 30 practice test covers these modules:

• Introduction to OSHA 30 & managing safety and health
• Fall protection, electrical safety, struck-by, and caught-in/between (the Focus Four)
• Personal protective equipment (PPE)
• Health hazards (silica, noise, respiratory protection)
• Stairways, ladders, and scaffolds
• Confined spaces

Is OSHA 30 required by law?

OSHA 30 itself is not federally mandated for every worker, but many states, cities, and general contractors require it for supervisors on construction sites, and some jurisdictions require it by law for certain public projects. Check your local requirements and your employer's policy.

Does OSHA 30 certification expire?

The OSHA 30 card itself does not expire. That said, many employers and job sites require periodic refresher training regardless of card validity, so check your employer's or contract's specific requirements.