How is heat stroke different in outdoor workers?

Heavy physical effort, hot weather, humidity, direct sun, limited breaks and heat-trapping clothing can make cooling fail. Heat stroke may follow heat exhaustion, but it can also appear suddenly. The key warning is a change in brain function: confusion, unusual behaviour, poor coordination, fainting, seizure or difficulty waking. The person may sweat heavily, or their skin may be hot and dry; sweating does not rule out heat stroke. Do not wait for a thermometer reading before acting.

Call emergency services immediately and state that heat stroke is suspected. Move the person to a cooler place, remove excess clothing and begin rapid cooling with cool water, wet cloths, fanning or an appropriate cooling method. Stay with them and monitor breathing. If unconscious but breathing, place them safely on their side. Do not give drinks to a confused, drowsy or unconscious person, and do not delay the emergency call to arrange transport.

Any altered mental state after heat exposure is an emergency, especially with collapse, seizure, severe weakness, vomiting or very hot skin. A worker who is alert but not improving quickly after cooling still needs urgent assessment. Heat stroke can injure organs even when the person appears better, so workplace first aid and medical review should be arranged before any return to heat or exertion.

Ask what health conditions or medicines affect heat risk, whether the event needs follow-up tests, and what changes to breaks, hydration, clothing, supervision and acclimatisation are needed before resuming outdoor duties.