Weather safety: Preventing heat-related injuries

Heat-related illnesses pose serious health risks, including conditions like heat stroke, which can be life-threatening. Outdoor workers are particularly vulnerable. Although construction workers make up less than 10% of the workforce, they account for over 30% of heat-related deaths.¹

Types of heat related-illnesses (HRIs): Heat rash, heat cramps, heat syncope (fainting), rhabdomyolysis (muscle fiber death), heat exhaustion, and heat stroke.

• Heavy sweating
• Cold, pale, or clammy skin
• Weakness or fatigue
• Dizziness or confusion
• Nausea or vomiting
• Headache
• Fast, weak pulse
• Low urine output
• Muscle cramps

• High body temperature (above 103°F)
• Hot, red, dry, or damp skin
• Rapid and strong pulse
• Confusion or altered mental state
• Loss of consciousness

Note: Heat stroke can be fatal.

Recognize the symptoms of heat stress and heat related illnesses.

Notify your supervisor or seek medical help immediately if you experience or recognize a coworker with a heat-related illness. Stop work and get yourself or coworker to a cool shaded area, remove heavy clothing and get access to cool drinking water.

Monitor the weather. Evaluate forecasted conditions and adjust your work plans and clothing accordingly. Use tools like the NIOSH/OSHA Heat Safety Tool App to monitor temperature and humidity.

Acclimatization Plan: Gradually build up your workload as your body adapts to hot conditions.

Modify Work Periods: Avoid high heat times and increase breaks or rest periods.

• Consume water and electrolyte-based drinks regularly.
• Avoid caffeine, sugary drinks, and alcohol.
• Avoid heavy meals

• Use wet towels, ice, and lightweight, breathable clothing.
• Use fans or air conditioning units
• Provide access to shade or cooled areas.