Trade certification · Construction safety
OSHA 10-Hour Construction Outreach (knowledge check)
The knowledge checks in the 10-hour OSHA construction course: workers' rights and OSHA, the Focus Four (falls, electrocution, struck-by, caught-in or between), PPE, health hazards such as silica and noise, and elective topics like scaffolds, ladders and excavations.
Questions last checked against the official sources on October 11, 2026.
The real exam at a glance
- Course
- At least 10 hours: 6 h required, 2 h electives, 2 h optional
- Daily limit
- 7.5 student contact hours per day, so at least 2 days
- Finish within
- 180 calendar days of the class start
- Tests
- Set by the trainer or online provider; online providers report 70% with up to 3 attempts
- Card
- DOL course completion card, issued within 90 days; replacement only within 5 years
- Body
- OSHA Outreach Training Program, through authorized trainers
What you'll practise
Try a question
A hazard where there is a substantial probability of death or serious physical harm, which the employer knew or should have known about, is cited as:
- An other-than-serious violation
- A posting violation
- A serious violation
- A de minimis violation
Show the answer
C. A serious violation — Serious violations involve a substantial probability of death or serious harm that the employer knew or should have known about.
Sample questions by topic (in English)
- Introduction to OSHA
- Focus Four: Falls
- Focus Four: Electrocution
- Focus Four: Struck-by
- Focus Four: Caught-in or between
- Personal protective equipment
- Health hazards
- Other construction hazards
- About the Outreach course
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Questions about the OSHA 10 Construction
Is this the official OSHA 10 Construction?
No. Semplr is independent and not affiliated with the exam body. We write every question ourselves, in the official format and at the official level.
What is the real OSHA 10 Construction like?
Course: At least 10 hours: 6 h required, 2 h electives, 2 h optional. Daily limit: 7.5 student contact hours per day, so at least 2 days. Finish within: 180 calendar days of the class start. Tests: Set by the trainer or online provider; online providers report 70% with up to 3 attempts. Card: DOL course completion card, issued within 90 days; replacement only within 5 years. Body: OSHA Outreach Training Program, through authorized trainers.
How is my practice marked?
Instantly. You see your score against the pass mark, and an explanation for every question — including the ones you got right.
Can I take it on my phone?
Yes. The whole mock exam works on a phone, and your progress is saved in your browser.
Ready for a full run?
One sitting, real timing, then your score against the pass mark.
Start the free mock exam