Heat Injury and Awareness on the Job: Preparing for Summer Hazards

As temperatures rise heading into the summer months, so do the risks associated with working in hot environments. Heat-related illnesses are a serious and growing concern across many industries, including construction, manufacturing, warehousing, agriculture, and utilities. Without proper awareness and prevention, heat exposure can quickly become dangerous and even fatal.

Why Heat Is a Serious Workplace Hazard

Heat is one of the leading causes of weather-related deaths in the United States, and workers are especially vulnerable when exposed to high temperatures for extended periods.

When the body cannot cool itself effectively, workers can experience a range of heat-related conditions, including:

• Heat exhaustion, such as heavy sweating, weakness, and dizziness
• Heat cramps caused by dehydration and electrolyte loss
• Heat stroke, a life-threatening emergency marked by confusion, loss of consciousness, and a high body temperature

Several factors increase the risk of heat illness:

• High humidity
• Direct sun exposure
• Heavy physical labor
• Lack of acclimatization
• Inadequate hydration

Both outdoor and indoor workers are at risk, especially in environments like warehouses, kitchens, and manufacturing facilities where heat can build quickly.

OSHA’s New Heat Safety Standard

OSHA is currently developing a nationwide Heat Injury and Illness Prevention Standard to better protect workers from excessive heat exposure.

Key Highlights of the Proposed Rule

• Applies to both indoor and outdoor workplaces across most industries
• Require employers to implement a written Heat Illness Prevention Plan
• Establishes temperature-based triggers for action
  • At 80°F, employers must provide water, shade, and rest breaks
  • At 90°F, additional protections such as increased breaks and monitoring are required
• Requires training for employees and supervisors on recognizing and responding to heat illness
• Emphasizes the importance of acclimatization for new or returning workers

While the rule is still in development, it signals a clear move toward stronger heat safety requirements. Employers should begin preparing now to stay ahead of compliance expectations.

Practical Tips to Keep Workers Safe and Cool

Preventing heat illness is possible with proper planning and awareness. The following steps can help protect workers during the summer months:

1. Hydration Is Critical

• Always provide cool drinking water
• Encourage workers to drink frequently, even if they are not thirsty

2. Schedule Work Strategically

• Plan physically demanding tasks during cooler parts of the day, such as early morning or evening
• Rotate workers to limit prolonged heat exposure

3. Allow Time for Rest and Recovery

• Schedule regular rest breaks in shaded or air-conditioned areas
• Increase the frequency of breaks as temperatures rise

4. Provide Shade and Cooling Areas

• Use tents, canopies, or indoor cooled spaces
• Ensure workers have easy access to these recovery areas

5. Acclimatize Workers Properly

• Gradually increase workloads for new or returning workers
• Many heat-related illnesses occur during the first few days on the job

6. Train Workers to Recognize Symptoms

• Educate employees on early warning signs of heat stress
• Encourage immediate reporting of symptoms

7. Use a Buddy System

• Pair workers so they can monitor each other for signs of heat illness
• This is especially important during high heat conditions

8. Monitor Environmental Conditions

• Track the heat index rather than temperature alone
• Adjust work practices when conditions become more hazardous

9. Encourage Proper Clothing

• Recommend lightweight, breathable, and light-colored clothing
• Consider cooling personal protective equipment when appropriate

10. Be Prepared for Emergencies

• Ensure supervisors know how to respond to heat illness
• Treat heat stroke as a medical emergency and act quickly

Heat hazards are predictable and preventable. With OSHA moving toward a formal heat standard and temperatures rising each year, now is the time to strengthen workplace heat safety programs.

A proactive approach protects workers while also improving productivity, morale, and overall compliance.

Stay alert, stay hydrated, and stay safe this summer.

Purchase NASP’s Heat Injury and Illness Prevention Specialist (HIIPS) Course