OSHA · Free course
Heat Illness Prevention
How to recognize, prevent, and respond to heat-related illness on the job: what heat illness is and why it is dangerous, the risk factors that drive it (high…
OSHA
Heat Illness Prevention
What you’ll learn
By the end of this course.
Explain what heat illness is, how the body sheds heat, and why it matters — General Duty Clause
Identify the risk factors for heat illness: high temperature and humidity, exertion, PPE, lack of acclimatization, and dehydration
Apply Water, Rest, and Shade as the core of heat illness prevention
Describe acclimatization and how new and returning workers build heat tolerance — the Rule of 20%
Tell the difference between heat exhaustion and life-threatening heat stroke by their warning signs
Respond correctly to a heat emergency — call 911, cool the person aggressively, and report symptoms early
References & standards
Grounded in the source material.
- OSHA — Heat (Water. Rest. Shade.) occupational heat exposure
- OSH Act Section 5(a)(1) — General Duty Clause
- OSHA-NIOSH Heat Safety Tool (heat index app)
- National Weather Service — Heat Index
This is awareness training. It supports your program; it is not a substitute for site-specific procedures or hands-on competency where a standard requires it.
More OSHA courses
Keep building the program.
Start this course free.
EHSTEC LMS Lite is free for employers to assign — 100 safety courses, no cost. Paid plans add certificates, reporting and proof of completion.