Heat Illness Prevention Requirements

California: Cal-OSHA has made Heat Illness an enforcement priority pursuant to the Heat Illness standard (GISO §3395). Below is a partial list of industries in California that must have an active Heat Stress Injury and Illness Prevention Program.
  • Agriculture
  • Construction
  • Delivery Personnel
  • Landscaping/Nurseries
  • Manufacturing
  • Petroleum Works
  • Public Works
  • Transportation and Warehousing
  • Shipyard/Docks
  • Utility Workers

All Other States: The Heat Illness Prevention Poster also meets the standards of Federal OSHA’s General Duty Clause 29 U.S.C 654 Section 5(a)(1). The General Duty Clause requires each employer to “furnish to each of his employees employment and a place of employment which are free from recognized hazards that are causing or are likely to cause death or serious physical harm to his employees.”


To ensure that your business meets these requirements, review these heat illness prevention items.