Authorities have not said how long the heatwave will last. Meteorologists linked it to an Omega block, a weather pattern that traps hot air and lets temperatures build over several days.
Following are some of the working regulations in heat conditions currently in force in Europe, by country.
A person cools off at Trocadero fountain near the Eiffel Tower during a heat wave in Paris, Wednesday, June 24, 2026. Photo by AP
Belgium
Workplace heat rules are based on the Wet Bulb Globe Temperature (WBGT) heat-stress index. Action thresholds are 29 C for office/light work, 26 C for moderate work, 22 C for heavy work, and 18 C for very heavy work. When these levels are exceeded, employers must take measures such as cooling, ventilation, extra breaks and providing drinks.
