Stay Safe at Work: WHO Issues Warning About Extreme Heat Hazards

Workers around the world face serious health risks from extreme heat, a concern magnified by climate change. A recent report from the World Health Organization (WHO) and the World Meteorological Organization (WMO) highlights the urgent need for better protection for workers exposed to heat stress.

The report underpins a troubling reality: millions are at risk daily. Heat can harm not just individual health but also workplace productivity. For every degree the temperature rises above 20°C, productivity could fall by 2%. That’s a significant drop, especially in sectors like construction and agriculture, where workers are often outdoors.

Rüdiger Krech, WHO’s director of environment, climate, and health, emphasizes that heat isn’t just uncomfortable; it’s dangerous. Prolonged exposure can lead to serious issues like heat stress, dehydration, and extreme cases like stroke and kidney failure. The last decade has seen some of the hottest temperatures on record, and 2024 is set to break records, reinforcing the need for adaptations in work environments.

In 2023, as Europe faced intense heat, accidents increased too. In Switzerland, for example, workplace accidents rose by 7% when temperatures exceeded 30°C. Workers struggle to concentrate, and lack of sleep from the heat contributes to mistakes on the job.

Some countries are already taking action. Italy has introduced protocols to protect workers by limiting work during the hottest hours. Similarly, Swiss cantons like Geneva halted outdoor construction to ensure worker safety, a decision touted by labor unions.

But it’s not just about workers. Vulnerable groups such as the elderly and children are also at risk during heatwaves. In Germany, schools can declare “Hitzefrei” when temperatures soar, allowing students to go home. However, as heatwaves become more common, this solution is less viable. The WHO acknowledges the challenges in balancing education and health.

School environments, like workplaces, need upgrades. In Switzerland, as temperatures climbed, teachers were advised to hold classes at swimming pools, a suggestion met with skepticism. Dagmar Rösler, head of the Swiss teachers’ association, calls for renovations, including better ventilation and air conditioning. Comfortable learning environments are essential for both students and educators.

Adapting to extreme heat is not just a matter of comfort; it requires collaboration among governments, employers, and local authorities. Krech points out that any adaptations, such as changes to uniforms in UK schools to suit hot weather, are vital for maintaining productivity and health.

However, the financial question looms large. While governments shift spending to defense, climate change adaptation slips down the priority list. Krech warns against this short-sightedness: neglecting necessary investments today could lead to severe productivity losses and health issues tomorrow.

A national survey revealed that nearly 70% of workers feel unprepared for extreme heat at work. It’s clear that more systemic changes are needed to ensure all work environments are safe, regardless of temperature. The conversation around adapting to climate change must include all voices—from workers to policymakers—to create a sustainable future.

For insights on adapting workplaces and schools to cope with extreme heat, you can reference resources from the WHO.

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