The course covers: heat-related illnesses and their signs and symptoms; heat illness prevention plans; supervision and condition monitoring; personal risk factors for heat illness; acclimatization and work duration guidelines for new and returning workers; the OSHA heat index and risk categories; clothing adjustment factors; engineering controls for heat prevention; work practice controls including water, rest, and shade; first aid and emergency action plans; and heat stress management standards. The course is divided into 4 units with quizzes at the end of each unit.

Heat exhaustion is a serious condition with symptoms including heavy sweating, weakness, nausea, dizziness, and cool or moist skin. If untreated, it can progress to heat stroke. Heat stroke is a life-threatening medical emergency where the body’s temperature regulation system fails, resulting in a core body temperature above 103°F, hot and dry skin (no sweating), confusion, loss of consciousness, and possible seizures. Heat stroke requires immediate emergency medical treatment by calling 911. This course teaches workers to recognize both conditions and respond appropriately.

The course takes approximately 1 hour to complete. Because it is self-paced, you can complete it in one sitting or over multiple sessions at your convenience. Most students finish in a single session. Progress is saved automatically on the same device, so you can stop and resume at any time.

OSHA’s general duty clause (Section 5(a)(1) of the OSH Act) requires employers to provide a workplace free from recognized hazards, including heat. OSHA recommends heat illness prevention training for all workers and supervisors exposed to hot environments. Some states, including California (Cal/OSHA Title 8, Section 3395), have specific heat illness prevention regulations that mandate formal training. Employers in all 50 states are responsible for protecting workers from heat-related hazards regardless of state-specific rules.

You must score at least 70% on the final exam to pass and receive your certificate of completion. The course includes knowledge-check quizzes at the end of each unit to help prepare you for the final exam. If you do not pass on your first attempt, you can retake the exam.

Yes. eTraining’s Heat Illness Prevention course is aligned with OSHA’s heat illness prevention guidance and the general duty clause, and is accepted nationwide. You receive a printable certificate of completion that documents your training. Employers across all 50 U.S. states accept this training as part of their heat illness prevention compliance programs.

Yes. The Heat Illness Prevention course works on desktop computers, laptops, tablets, and smartphones. Your progress is saved automatically on the same device you are using, allowing you to pause and pick up where you left off. Note: you must continue on the same device to retain your saved progress.

Acclimatization is the process of gradually increasing a worker’s exposure to hot working conditions over a period of 7 to 14 days. This allows the body to adjust to the heat and significantly reduces the risk of heat illness. OSHA data shows that 50% to 70% of outdoor fatalities from heat occur within the first few days of working in hot conditions, often because workers have not been properly acclimatized. The course covers employer acclimatization procedures for both new and returning workers.

There is no federally mandated expiration date for heat illness prevention training certificates. However, OSHA recommends annual refresher training before the start of warm weather seasons to reinforce prevention strategies, recognition of symptoms, and emergency response procedures. Some state-specific regulations, such as Cal/OSHA Title 8, Section 3395, may have specific retraining requirements. Check with your employer or state agency for any renewal obligations.