The World Health Organization (WHO) has issued a critical alert regarding the rising risks of heat stress for workers, particularly in high-risk sectors like construction and agriculture, as climate change catalyzes more severe heatwaves globally. This announcement comes from a newly released report co-authored by the WHO and the World Meteorological Organization (WMO), which states that millions of workers are currently exposed to dangerous heat levels, influencing both their health and productivity.
Rüdiger Krech, WHO's Director of Environment, Climate, and Health, highlighted the gravity of the issue, underscoring that “it is not just discomfort; it’s a real health risk.” Prolonged exposure to heat over 38°C can significantly increase the chances of severe heat-related ailments such as strokes, kidney failure, and dehydration. The report marks the first comprehensive analysis of workplace heat stress by the WHO since 1969, signaling an urgent call for collaboration between governments, employers, and labor organizations to create effective adaptation strategies.
The frequency of heatwaves is escalating, with the past decade recording the hottest temperatures ever. According to WMO data, 2024 is projected to be exceptionally hot, with regions in Europe and parts of Africa reaching temperatures above 50°C. Notably, work productivity declines by 2% for every degree above 20°C, with a documented increase in workplace accidents as temperatures rise.
In response to these challenges, various European nations are exploring methods to ensure worker safety, such as Italy’s new emergency protocols to avoid work during peak heat hours and Switzerland’s suspension of construction during extreme heat situations. The emphasis is on fostering a culture of care, where companies prioritize worker welfare over strict deadlines.
Besides workplace concerns, the WHO report indicates that vulnerable populations—including the elderly, young children, and those with chronic illnesses—are at greater risk during heatwaves. Urging schools to implement adaptive measures, Krech noted that traditional responses to high temperatures—such as declaring “Hitzefrei” in German schools—are becoming inadequate as hotter weather becomes more persistent.
With the ongoing challenges posed by extreme temperatures, educators and union leaders are advocating for upgrades to school facilities to include improved ventilation and air conditioning. As Krech points out, adapting education and workplaces to be resilient against heat will necessitate financial investment, a point underscored amid shifting government priorities.
The WHO’s report captures a desperate need for a collective response to climate change challenges within labor and educational contexts, emphasizing that the costs of inaction may tremendously outweigh the investments needed for adaptation.
