OSHA 10-Hour Construction exam topics — the 5 content areas by weight
The OSHA 10-Hour Construction exam is built from 5 weighted content areas. Focus your time where the weight is. Each area below links to a free study chapter and practice questions. Weights reflect the official content outline.
Introduction to OSHA
20%worker rights, employer duties, inspections
Focus Four Hazards
20%falls, electrocution, struck-by, caught-in/between
PPE & Lifesaving Equipment
20%head/eye/hand/foot, respiratory, fall protection
Health Hazards in Construction
20%silica, asbestos, lead, hazcom/GHS
Electives
20%cranes, scaffolds, ladders, tools, excavations
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Content-area weights reflect the official OSHA 10-Hour Construction content outline. Confirm current details with OSHA — Construction Outreach. Study aid, not a substitute for the official material. Last updated: August 2026.