Recognizing heat illness: call promptly for warning signs and activate trained help
On a hot afternoon, a worker near the warehouse material area becomes confused and stumbles. Their clothing is damp with sweat. A colleague wants to wait for the foreman to decide whether this is heat stroke. The urgent response cannot depend on proving a diagnosis or waiting for sweating to stop.
NIOSH identifies confusion, slurred speech, unconsciousness and seizures among heat-stroke warning signs; skin may be dry or sweating may be profuse. Possible heat stroke is an emergency: call 911 immediately, stay with the worker and begin prompt cooling through the trained response. Other concerning illness also needs appropriate care. These US educational signs are not a diagnostic test or a replacement for the site's first-aid and emergency arrangements.
Put the person's response ahead of the paperwork
- Act on the concerning condition. Halt the affected activity through the site process and protect the person and helpers from further hazards. Possible heat-stroke warning signs require the emergency call now. Do not wait for a manager, a temperature reading or certainty about the cause. A sweating worker can still be in serious trouble; appearance is not clearance to continue.
- Activate the actual help route. Call emergency services and the trained site first-aid response promptly, giving the precise location and safely observed condition. Assign someone to receive and guide responders using the established access arrangement. Keep notification to management alongside the response rather than make it a prerequisite. State what you observe without claiming a medical diagnosis.
- Stay with the worker and support prompt care. Follow dispatcher and trained first-aid instructions, including prompt appropriate cooling. Help only within your training and the safe scene arrangements. Do not leave the worker alone while obtaining a form or offer an improvised treatment instead of care. This lesson gives no fluid quantity, medication, cooling duration or rule for returning to work.
- Receive the continuing care and work decisions. Give responders the known activity, conditions and event observations without delaying help to finish the history. Keep the person's health follow-up with appropriate personnel. Once urgent care is underway, have the responsible team reassess the affected work and its controls. A revised break schedule is not medical clearance for the worker or proof that every heat risk is resolved.
Common mistakes
- Waiting for skin to become dry before treating warning signs urgently.
- Making the emergency call depend on a supervisor's permission.
- Leaving the worker alone to complete records.
- Treating a changed work schedule as medical clearance.
Action list
When possible serious heat illness appears
- Address the immediate activity and safe scene.
- Call 911 now for possible heat-stroke warning signs.
- Activate trained first aid and responder access.
- Stay with the worker and support prompt instructed care.
- Keep health follow-up and work reassessment with their proper owners.
Check your understanding
The confused worker is still sweating, and the manager has not answered. Should the crew wait?
