WHO–WMO Guidance to Protect Workers from Rising Heat Stress

On 22nd August 2025, the World Health Organization (WHO) and the World Meteorological Organization (WMO) released a joint report and technical guidance, warning of the escalating global health and economic risks posed by extreme heat on workers worldwide.

Key Findings of the Report

  • Frequency and intensity of extreme heat events have risen sharply.
  • Worker productivity declines by 2–3% for every degree above 20°C.
  • Health risks include heatstroke, dehydration, kidney dysfunction, and neurological disorders.
  • Approximately half of the global population experiences adverse impacts of high temperatures.
  • 2024 was confirmed by WMO as the hottest year on record.

Recommended Actions

  • Develop occupational heat-health policies and advisories ....
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Ecology & Environment