Prevent Heat Illness at Work
Outdoor and indoor heat exposure can be dangerous.
Ways to Protect Yourself and Others
Ease into Work. Nearly 3 out of 4 fatalities from heat illness happen during the first week of work.
New and returning workers need to build tolerance to heat (acclimatize) and take frequent breaks.
Follow the 20% Rule. On the first day, work no more than 20% of the shift’s duration at full intensity in the heat. Increase the duration of time at full intensity by no more than 20% a day until workers are used to working in the heat.
Drink Cool Water
Drink cool water even if you are not thirsty — at least 1 cup every 20 minutes.
Take Rest Breaks
Take enough time to recover from heat given the temperature, humidity, and conditions.
Find Shade or a Cool Area
Take breaks in a designated shady or cool location.
Dress for the Heat
Wear a hat and light-colored, loose-fitting, and breathable clothing if possible.
Watch Out for Each Other
Monitor yourself and others for signs of heat illness.
If Wearing a Face Covering
Change your face covering if it gets wet or soiled. Verbally check on others frequently.
First Aid for Heat Illness
The following are signs of a medical emergency!
Abnormal thinking or behavior
Slurred speech
9-1-1 Seizures
Loss of consciousness
CALL 911 IMMEDIATELY
COOL THE WORKER RIGHT AWAY WITH WATER OR ICE
STAY WITH THE WORKER UNTIL HELP ARRIVES
Watch for any other signs of heat illness and act quickly. When in doubt, call 911.
If a worker experiences:
Headache or nausea
Weakness or dizziness
Heavy sweating or hot, dry skin
Elevated body temperature
Thirst
Decreased urine output
Take these actions:
Give water to drink
Remove unnecessary clothing
Move to a cooler area
Cool with water, ice, or a fan
Do not leave alone
Seek medical care if needed