Departments are responsible to protect employees from outdoor heat stress hazards by:

• Establishing a written outdoor heat stress program as part of their Accident Prevention Program when employees work in temperatures exceeding the following action levels:
  Outdoor Temperature & Clothing Action Levels
  • All other clothing: 89° F
  • Double-layer woven clothes including coveralls, jackets and sweatshirts: 77° F
  • Non-breathing clothes including vapor barrier clothing or PPE such as chemical resistant suits: 52° F
• Providing sufficient amounts of drinking water
• Establishing procedures for responding to outdoor heat related illnesses
• Providing supervisor and employee training

Training

Environmental Health and Safety has developed training materials that departments can use to meet the rule.

Resources

Outdoor Heat Stress Prevention written program template.

Fact Sheet: Heat-Related Illness – Don’t Lose Your Cool
Safety Policies and Procedures Manual: Outdoor Heat Stress