Heat Illness Prevention and Response

Work in hot environments can result in heat illness, a group of medical conditions caused by the body’s inability to cope with heat, and can be fatal. All university employees who work outdoors may be at risk for heat illness including, but not limited to, field researchers, grounds crews, maintenance workers, and special event staff.

Workers performing job duties outside should always

    • Scheduling breaks.
    • Providing ample shade and water.
    • Monitoring workers for signs and symptoms of heat illness.
    • Resting in shade if experiencing heat exhaustion; don't return to work in the sun.
    • If someone is experiencing heat stroke, immediately call 911 and apply first aid. Signs of heat stroke include: hot/red/dry skin, acting confused or disoriented, falling unconscious.


  • Ensure completion of heat illness prevention training via these options:
    • EHS 702 Heat Illness is a 20-minute online course available through the UC Learning Center.
    • Supervisor-led discussion using the EH&S Heat Illness Fact Sheet and Checklist (This option includes a form to document training attendance).

When the temperature exceeds 95°

Pay attention to details in the Work Planning and Site Checklist for high heat requirements, including more frequent breaks, the buddy system, and pre-shift check-in regarding heat.