A new report from the International Labour Organization (ILO), “Heat at work: Implications for safety and health”, warns that more workers are being exposed to heat stress worldwide.
The new data reveals that regions previously unaccustomed to extreme heat will face increased risks, while workers in already hot climates will confront ever more dangerous conditions.
Heat stress is an invisible and silent killer that can quickly cause illness, heatstroke or even death.
Over time it can also lead to serious heart, lung and kidney problems for workers, the study underlines.
Overall, the report indicates that workers in Africa, the Arab states and Asia and the Pacific are most often exposed to excessive heat.
In these regions, 92.9 per cent, 83.6 per cent and 74.7 per cent of the workforce are affected, respectively.
The figures are above the global average of 71 per cent, according to the most recent figures available (2020).
The fastest changing working conditions are seen in Europe and Central Asia, says the report.
From 2000 to 2020 the region recorded the largest increase in excessive heat exposure, with the proportion of workers affected rising by 17.3 per cent, almost double the global average increase.
Meanwhile, the Americas and Europe and Central Asia are witnessing the largest rise in workplace injuries from heat stress since the year 2000, with increases of 33.3 per cent and 16.4 per cent respectively. This is possibly due to hotter temperatures in regions where workers are unaccustomed to heat, the report notes.
The report estimates that 4,200 workers globally lost their lives to heatwaves in 2020. In total, 231 million workers were exposed to heatwaves in 2020, marking a 66 per increase from 2000. Nonetheless, the report stresses that nine out of ten workers globally were exposed to excessive heat outside of a heatwave and eight in ten occupational injuries from extreme heat happened outside of heatwaves.
“As the world continues to grapple with rising temperatures, we must protect workers from heat stress year-round. Excessive heat is creating unprecedented challenges for workers worldwide year-round, and not only during periods of intense heatwaves, said ILO Director General Gilbert F. Houngbo.
Improved safety and health measures to prevent injuries from excessive heat in the workplace could save up to US$361 billion globally – in lost income and medical treatment expenses – as the heat stress crisis accelerates, affecting global regions differently, emphasises the study.
