A recent WHO report has raised alarms regarding the increased risk of heat stress among workers, particularly in construction and agriculture, as climate change leads to more frequent and severe heatwaves. The report urges governments, employers, and workers to collaborate on strategies for safer working conditions and warns of long-term health risks and productivity losses.
WHO Urges Action on Workplace Heat Stress Amid Climate Change Crisis

WHO Urges Action on Workplace Heat Stress Amid Climate Change Crisis
The World Health Organization highlights rising heat risks for workers due to climate change, calling for urgent adaptation measures to protect health and productivity.
The World Health Organization (WHO) has released a stark warning about the escalating risks of heat stress among global workers, a situation exacerbated by climate change. This report, developed in collaboration with the World Meteorological Organization, underscores the urgent need for protective measures as the frequency of extreme heat events rises significantly. According to the WHO, millions of workers face health risks that negatively impact their performance and wellbeing, urging a united effort among governments, employers, and the workforce to devise adaptive strategies for workplace safety.
This marks the WHO's first comprehensive report on work-related heat stress since 1969. Dr. Rüdiger Krech, the WHO's director specializing in environment, climate, and health, emphasizes that the findings should act as a crucial call to action. "Heat exposure is not just uncomfortable; it poses real health risks," he stated. Prolonged exposure to temperatures exceeding 38°C (100°F) can lead to severe heat-related health issues such as strokes, kidney failure, and dehydration.
As heatwaves become increasingly common—the last decade recorded the hottest temperatures on record, with projections suggesting 2024 could be the hottest yet—the adaptation of workplaces is becoming crucial. The World Meteorological Organization reports that average surface temperatures in places like the Mediterranean have reached unprecedented levels, impacting health outcomes and worker productivity alike. The report quantifies this impact, noting that productivity declines by 2% for every degree Celsius above 20°C, while data from Switzerland indicated a 7% rise in accidents during peak heat conditions.
Countries in Europe are starting to address the urgent need for temperature regulations in labor environments. For instance, Italy has recently enacted an emergency decree to protect workers during intense heat waves by prohibiting work during the hottest parts of the day. Parallel measures were taken in Switzerland, where construction activities were halted during the 2023 heatwave, highlighting a growing recognition of the responsibility firms have in safeguarding their employees.
The WHO's report highlights vulnerable populations beyond the workforce, including the elderly, chronically ill individuals, and children. This is especially relevant as schools face similar heat-related challenges. With rising temperatures often reaching or exceeding 30°C, educational institutions are grappling with maintaining effective learning environments. In Germany, for instance, schools may implement "Hitzefrei" policies but are hesitant to fragment educational time frequently as high temperatures become the norm.
As students returned to school recently in Switzerland, many environments exceeded 30°C, prompting recommendations for innovative solutions such as relocating classes to swimming facilities. However, educational authorities assert the challenge of combining effective learning with temperature concerns. Significant infrastructure adaptations, including improved ventilation and air conditioning for schools, are suggested as necessary investments.
Ultimately, the WHO advocates for a collaborative approach encompassing all stakeholders—governments, employers, workers, and educational authorities—to ensure adaptive strategies are effective. Dr. Krech urges decision-makers to reconsider financial allocations, arguing that neglecting heat adaptation could lead to greater long-term costs due to lost productivity and severe health effects. "More than just a matter of immediate expense, it is essential to recognize the longer-term impacts of not investing in adaptation initiatives," he cautioned.
As the climate continues to change, the call for immediate action in response to workplace heat stress and other related risks becomes increasingly urgent, emphasizing the need for systemic solutions in the face of growing global temperatures.