Extreme heat is increasingly harming worker health and reducing productivity worldwide, with productivity declining 2–3% for every degree Celsius above 20°C. Over 2.4 billion workers, especially in agriculture, construction, and fisheries, face growing risks from heat stress as temperatures rise and heatwaves become more frequent and intense, including in regions not previously affected. Practical, evidence-based workplace heat action plans tailored to specific industries and regions are essential to protect workers, reduce health inequalities, and maintain economic resilience amid climate change. Immediate implementation of these measures can safeguard lives and livelihoods in a warming world[1][2][3][4][5].
