Heat Illness Prevention and Response

If the forecast exceeds 80o F, shade must be provided by natural or artificial means for rest breaks.

When temperatures are expected to exceed 95o F, if possible, limit strenuous tasks to morning or late afternoon hours. Rest breaks in shade must be provided at least 10 minutes every 2 hours (or more if needed). Effective means of communication, observation and monitoring for signs of heat illness are required at all times. A pre-work safety discussion is required.

First Aid Reference – Signs & Symptoms of Heat Illness

Heat Exhaustion

Signs & Symptoms
  • Dizziness, headache
  • Rapid heart rate
  • Pale, cool, clammy or flushed skin
  • Nausea and/or vomiting
  • Fatigue, thirst, muscle cramps
  1. Stop all exertion.
  2. Move to a cool shaded place.
  3. Hydrate with cool water.
Response Action
  • Heat exhaustion is the most common type of heat illness. Initiate treatment.
  • If no improvement, call 911 and seek medical help.
  • Do not return to work in the sun. Heat exhaustion can progress to heat stroke.

Heat Stroke

Signs & Symptoms
  • Disoriented, irritable, combative, unconscious
  • Hallucinations, seizures, poor balance
  • Rapid heart rate
  • Hot, dry and red skin
  • Fever, body temperature above 104 °F
  1. Move (gently) to a cooler spot in shade.
  2. Loosen clothing and spray clothes and exposed skin with water and fan.
  3. Cool by placing ice or cold packs along neck, chest, armpits and groin.  Do not place ice directly on skin
Response Action
  • Call 911 or seek medical help immediately.
  • Heat stroke is a life threatening medical emergency. A victim can die within minutes if not properly treated. Efforts to reduce body temperature must begin immediately!