The 30-hour is not the 10-hour stretched
This is the thing worth knowing before booking either, and OSHA says it in its own framing of the two courses. The 10-hour is intended to give workers information about their rights, employer responsibilities and how to file a complaint. The 30-hour is intended to provide training to workers with some safety responsibilities.
So it is the American supervisor course, which makes its closest relative on this site the CSCS supervisory paper rather than the operatives one. Three concrete differences, all from OSHA's Construction Industry Procedures:
- Managing Safety and Health becomes a required two hour topic, and it does not appear in the 10-hour curriculum at all.
- Stairways and Ladders is promoted from elective to required, at one hour. It is the only topic that moves between the two lists.
- Foundations for Safety Leadership becomes available, and it is the only elective anywhere in either course with a minimum longer than thirty minutes.
The elective requirement also roughly triples: twelve hours across at least six topics, against two hours across at least two in the 10-hour.
The leadership module is the part nobody expects
Foundations for Safety Leadership is a two and a half hour module developed by CPWR, the Center for Construction Research and Training, and approved by OSHA's Directorate of Training and Education as an official 30-hour elective on 1 January 2017. Around a million people have taken it since.
It teaches five named skills to foremen and other front-line leaders: lead by example, engage and empower team members, actively listen and practise three-way communication, develop team members through teaching, coaching and feedback, and recognise team members for a job well done.
Read that list against what a foreman is usually trained to do and the gap is obvious: none of the five is enforcement. The module was built around the finding that a supervisor's behaviour moves the site's safety climate, and that climate moves the injury rate. It also teaches the cost of ineffective leadership, which is the half that lands with people who assume this is soft content padding out a compliance course.
Why the questions here come from two pools
The 30-hour genuinely contains the 10-hour material, so a practice paper that ignored it would be testing a quarter of the course. This one draws 15 of 40 questions from the 30-hour-only pool and the rest from the shared curriculum.
And the tool reports the two repeat rates separately. A combined figure hides the smaller pool, and the smaller pool is the one somebody sitting the 30-hour is actually here for. That is arithmetic rather than a promise: two papers drawing K questions from a bank of N share about K squared over N, so a healthy-looking overall bank can still recycle the specialist half every sitting.
Two electives worth choosing on purpose
The elective list runs to fifteen topics and the trainer picks. Two of them account for a disproportionate share of construction deaths and both are decisions a supervisor makes rather than a worker, so both are covered here in depth.
Permit-required confined spaces. The trap is not the permit, it is the order of the gas test: oxygen first, then flammables, then toxics, because most combustible gas meters need enough oxygen to read correctly and testing flammables first can return a falsely reassuring result. The other one is that an attendant must never enter to rescue, because a large share of confined space deaths are would-be rescuers walking into whatever dropped the first person.
Cranes. The fatality mechanism people underestimate is the swing radius of the counterweight, which crushes bystanders who are nowhere near the load and who are watching the hook. Operator certification is also specific to the type and capacity of machine, so a certificate does not travel up to a bigger crane.
And the same honesty as the shorter course
There is no OSHA 30 exam. Both courses are instructional hours with a card at the end, and OSHA publishes no bank, no paper and no pass mark for either. Anybody quoting an official OSHA 30 pass mark is quoting a number that was never set.
The forty questions and the twenty-eight pass here are ours, matching the seventy per cent the online providers commonly use on their own module quizzes. Every answer cites the federal standard or, for the leadership module, CPWR itself, because CPWR wrote it and is the primary source for what it teaches.
Common questions
What is the difference between OSHA 10 and OSHA 30?
Not just twenty hours. The 10-hour is aimed at workers and covers their rights, employer responsibilities and how to file a complaint. The 30-hour is aimed at workers with some safety responsibility, and it adds management content that does not exist in the shorter course at all: Managing Safety and Health becomes a required two hour topic, Stairways and Ladders is promoted from elective to required, and Foundations for Safety Leadership becomes available as an elective. It is the American supervisor course.
How are the 30 hours split?
Fourteen required hours: Introduction to OSHA for one, Managing Safety and Health for two, the Focus Four for six with falls taking at least an hour and a half, Personal Protective Equipment for two, Health Hazards in Construction for two, and Stairways and Ladders for one. Then twelve elective hours with at least six topics presented, and four optional hours.
What is Foundations for Safety Leadership?
A two and a half hour module developed by CPWR, the Center for Construction Research and Training, which OSHA approved as an official 30-hour elective on 1 January 2017. It teaches five leadership skills to foremen and front-line leaders: lead by example, engage and empower team members, actively listen and practise three-way communication, develop team members through teaching, coaching and feedback, and recognise team members for a job well done. It is the only elective in either course with a minimum longer than thirty minutes.
Is there an OSHA 30 exam or pass mark?
No, the same as OSHA 10. Both are instructional-hours programmes with a course completion card at the end, and OSHA publishes no question bank, no paper size and no pass mark for either. The forty questions and the twenty-eight pass mark used here are ours, matching the seventy per cent most online providers set on their own module quizzes.
Do I need OSHA 10 before OSHA 30?
No. They are separate courses and the 30-hour is not a top-up. You cannot combine a 10-hour card with a twenty-hour course to make a 30-hour one, because the 30-hour has its own required curriculum including topics the 10-hour never covers.
Does OSHA 30 cover everything in OSHA 10?
Substantially yes, which is why this practice paper draws from both pools. Introduction to OSHA, the Focus Four, PPE and Health Hazards are required in both, though several get more time in the 30-hour: PPE goes from thirty minutes to two hours and Health Hazards does the same.
Which electives should a supervisor pick?
That is the trainer and the employer decision, but the two with the most fatalities behind them on a construction site are permit-required confined spaces and cranes, which is why this bank covers both in depth. Foundations for Safety Leadership is worth taking on purpose rather than by accident, given it consumes two and a half of the twelve elective hours.
Does an OSHA 30 card expire?
OSHA sets no expiry on the student course completion card. Many employers, states and project specifications require it refreshed anyway, commonly every three to five years. So the card does not lapse federally while the requirement to hold a current one may still bite, and a lost card is chased through the trainer who ran the class, not through OSHA.