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June 2006

Heat Stress

When the body is unable to cool itself by sweating, several heat-induced illnesses such as heat stress or heat exhaustion and the more severe heat stroke can occur, and can result in death.

Factors Leading to Heat Stress:

High temperature and humidity; direct sun or heat; limited air movement; physical exertion; poor physical condition; some medicines; and inadequate tolerance for hot workplaces.

Symptoms of Heat Exhaustion:

• Headaches, dizziness, lightheadedness or fainting.
• Weakness and moist skin.
• Mood changes such as irritability or confusion.
• Upset stomach or vomiting.

Symptoms of Heat Stroke:

• Dry, hot skin with no sweating.
• Mental confusion or losing consciousness.
• Seizures or convulsions.

Preventing Heat Stress:

• Know signs/symptoms of heat-related illnesses; monitor yourself and coworkers.
• Block out direct sun or other heat sources.
• Use cooling fans/air-conditioning; rest regularly.
• Drink lots of water; about 1 cup every 15 minutes.
• Wear lightweight, light colored, loose-fitting clothes.
• Avoid alcohol, caffeinated drinks, or heavy meals.

When conditions warrant, EH&S will issue a "Heat Stress Advisory" to the Campus Community to alert supervisors that work schedules may need to be modified as a result of forecasted weather conditions. If workers experience a heat-related illness, call the University Police (911 from any campus phone or (631) 632-3333 from a cell phone).

For more information on heat stress, view the OSHA Heat Stress Guide .

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