Construction Health and Safety Technician (CHST) math workbook: injury and illness rates
CHST written lesson, 6 min read. CHST Domain 3: Safety Program Development, Implementation, and Sustainment
Written with AI help from the rules it covers, then fact-checked against them. Study aid, not site-specific safety advice. The official rule controls.
What you'll learn
- Pick the right injury and illness rates formula from the wording of a question
- Carry units through every step
- Spot the common trap before choosing an answer
What this lesson covers
10 worked injury and illness rates problems for the CHST, each with every step, units and a common trap. All numbers are hypothetical.
This lesson is included with a pass
Written lessons come with every CHST pass, along with the video lessons, the question bank, mocks and the tutor. $80 per exam for 6 months, or $143 for all three for 12 months.