Heat Illness Prevention

Why it matters

Heat illness can turn into a medical emergency fast, and OSHA says workers who are new to working in warm environments are at increased risk. Water, rest, and shade are the base of any heat plan, along with a slow start for new workers and a clear plan for emergencies. Today we make sure everyone knows the signs and what to do.

Hazards

⚠ Working through the hottest hours without scheduled breaks
⚠ New workers not acclimatized to the heat
⚠ Dehydration: do not wait until you are thirsty to drink
⚠ Dark, heavy clothing and impermeable PPE trapping heat
⚠ Ignoring early signs: headache, dizziness, cramps, confusion
⚠ No one assigned to check on workers in isolated spots

Controls and safe practices

✓ Drink water often while working in the heat, on a regular schedule, not just when you feel thirsty.
✓ Take breaks in shade or air conditioning. Schedule heavy work for cooler hours.
✓ New and returning workers ramp up over several days. Do not throw them into full sun on day one.
✓ Use a buddy system in high heat wherever the crew allows it. A sole employee may work in high heat ONLY with the regular check-in communication procedure in the company heat plan (scheduled calls at set intervals, missed call = immediate dispatch of help); if reliable communication cannot be maintained, nobody works alone in high heat.
✓ Know the signs: cramps and heavy sweating mean rest and water now. Confusion, slurred speech, stumbling, or collapse means call 911 and cool the person immediately, whether or not they are still sweating.
✓ Cool the victim with water and ice while waiting for help. Minutes matter.

What OSHA says

Exact words from the official text, with a link to each paragraph.

“employers are required to provide their employees with a place of employment that "is free from recognized hazards that are causing or likely to cause death or serious harm to employees."”

OSH Act Section 5(a)(1), General Duty Clause (OSHA heat standards page)

“Employers should provide cool water for workers to drink. Proper hydration is essential to prevent heat-related illness. For those working two hours or more, also provide access to additional fluids that contain electrolytes.”

OSHA Heat: Water. Rest. Shade.

“Workers should be given a cool location where they can take their breaks and recover from the heat.”

OSHA Heat: Water. Rest. Shade. (Shade)

“During their first few days in warm or hot environments, employers should encourage workers to: Consume adequate fluids (water and sport drinks) work shorter shifts, take frequent breaks, and quickly identify any heat illness symptoms.”

OSHA Heat: Occupational Heat Exposure overview

“Do not try to diagnose which illness is occurring. Diagnosis is often difficult because symptoms of multiple heat-related illnesses can occur together. Time is of the essence. These conditions can worsen quickly and result in fatalities. When in doubt, cool the worker and call 911.”

OSHA Heat: Illness and First Aid

Site check before the talk

Walk the site and tick each line. Each line comes from the text quoted above.

☐Put cool drinking water where workers can get it. (OSHA Heat: Water. Rest. Shade.)
☐For work lasting two hours or more, also provide drinks with electrolytes. (OSHA Heat: Water. Rest. Shade.)
☐Set up a cool place for breaks, like shade. (OSHA Heat: Water. Rest. Shade. (Shade))
☐Give new workers shorter shifts and frequent breaks in their first few days. (OSHA Heat: Occupational Heat Exposure overview)
☐Teach crews to spot heat illness symptoms quickly. (OSHA Heat: Occupational Heat Exposure overview)
☐Name who calls 911 today and where the cooling supplies are. When in doubt, cool and call. (OSHA Heat: Illness and First Aid)

Quotes checked word for word against the official OSHA text on October 5, 2026. This is a summary for a crew talk, not legal advice; the full official text governs. How we check

Crew discussion questions

Where is the water and shade on this site today?
Who on the crew is new or coming back from time off and needs a lighter first day?
What time are we scheduling the heaviest work?
Who is checking on the crew members working alone?

Applicable OSHA standards

OSH Act 5(a)(1)

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