Over the years, we have seen an increasing number of heat waves and extreme heat events in France. For many workers—particularly those in the construction, manufacturing, and logistics sectors—working in high temperatures has now become part of their daily routine.
Beyond just discomfort, heat can have significant consequences for health, safety, and productivity at work. Fortunately, there are simple steps you can take to minimize these risks and continue working under the best possible conditions: we’ll explain everything in this blog post!
Why does extreme heat pose a risk in the workplace?
When the outside temperature rises, the body has to work harder to maintain a stable internal temperature. This additional strain leads to faster fatigue and can reduce physical and cognitive abilities.
The main risks associated with working in extreme heat are:
- dehydration;
- muscle cramps;
- severe fatigue;
- a decrease in concentration and alertness;
- feeling unwell;
- heatstroke, which is a medical emergency.
These risks particularly affect employees who work outdoors, but also those who work in workshops, warehouses, or inadequately ventilated facilities.
How can you work safely in extreme heat?
Stay hydrated regularly
Drinking water is still the first step you should take. It’s recommended that you stay hydrated throughout the day, without waiting until you’re thirsty, to avoid dehydration.
Opt for cool (but not ice-cold) water and limit your intake of alcoholic beverages, energy drinks, and very sugary drinks, which can lead to dehydration.
Adjusting Your Work Pace
When the organization allows it, it is best to:
- do the most physically demanding tasks during the coolest hours of the day;
- schedule regular breaks;
- Alternate between the most demanding activities and less physically demanding tasks.
Taking a few minutes to rest often helps prevent excessive fatigue and maintain a good level of concentration throughout the day.
Many companies are adjusting the work schedules of their employees—both permanent and temporary—by allowing them to start work earlier to avoid working during the hottest part of the day.
Wear appropriate clothing
The choice of clothing also plays an important role.
It is recommended to wear light, loose-fitting, light-colored clothing to help dissipate heat. When working outdoors, a hat or cap and sunglasses provide additional protection.
Of course, personal protective equipment (PPE) remains essential when required by the nature of the job. We therefore recommend that you consult with your supervisor to ensure that your attire complies with company policy.
Enjoy the cool spaces
Whenever possible, take breaks in a shaded, well-ventilated, or air-conditioned area. These breaks allow your body to cool down and recover more effectively.
What are the signs of heatstroke?
It’s essential to know how to recognize the early signs of heatstroke so you can act quickly! Be especially vigilant if you notice:
- persistent headaches;
- dizziness;
- nausea;
- unusual fatigue;
- muscle cramps;
- very hot or dry skin;
- confusion or difficulty speaking.
If these symptoms occur, it is important to stop what you are doing immediately, move to a cool place, drink water if the person is conscious, and call for help if their condition does not improve quickly.
Staying Productive Despite the Heat
Heat doesn’t just affect health—it also impacts work performance.
Greater fatigue often leads to reduced concentration, more mistakes, and an increased risk of accidents. By adopting good habits (staying hydrated, taking breaks, organizing your work), you can maintain your productivity while minimizing health risks.
Prevention is therefore beneficial for both employees and companies.
Good Habits to Adopt Among Coworkers
Prevention is also a team effort.
Paying attention to the people you work with can sometimes help prevent serious situations. A coworker who seems particularly tired, disoriented, or in distress should not be left alone.
Reminding each other to drink water, suggesting a break, or letting someone know if they’re feeling unwell are simple gestures that can make a difference.
Working in extreme heat requires special caution. Staying well-hydrated, taking regular breaks, organizing your work effectively, and paying attention to the first signs of fatigue can help reduce risks while maintaining good working conditions.
At Capa Intérim, we know that many temporary workers are employed in jobs where they are exposed to high temperatures, particularly in construction, manufacturing, logistics, and the food processing industry. Raising awareness of best practices and reminding workers of preventive measures helps improve everyone’s safety in the workplace.
Taking care of your health also means working with greater peace of mind, more efficiently, and safely—even when the temperature rises.