Japan's summers have crossed a threshold — from discomfort into danger. With 1,803 heat-related deaths recorded in 2025, the highest toll in two decades, the Japanese government has compelled industries to confront a truth that rising temperatures have made undeniable: the traditional workday, designed for a more forgiving climate, can no longer be assumed safe. What unfolds now is not merely a policy adjustment, but a civilization reckoning with the human cost of a changed world.
Japanese firms deploy cooling toilets, shorter shifts to combat deadly summer heat
1,803 people died from heatstroke or heat exhaustion in 2025, with construction workers (292 cases) and manufacturing employees (365 cases) representing the most vulnerable sectors.