Tokyo metropolitan government officials are adopting casual attire including shorts as part of an upgraded 'Cool Biz' initiative to reduce air conditioning use amid high energy costs and electricity supply concerns.
Government officials in casual dress code, including shorts, tee shirts and sneakers, work in the office of the Tokyo Metropolitan Government building, as part of the capital’s ‘ Cool Biz’ initiative, in Tokyo on July 14, 2026.
— AFP pic! Plus, enjoy an additional FREE RM10 when you sign up using code VERSAMM10 with a min. cash-in of RM100 today. T&Cs apply. TOKYO, July 16 — On a hot, humid day in Tokyo, metropolitan government official Noboru Watanabe overcame embarrassment to come to work in shorts, an unusual choice in a country where formal business attire is still the norm.
The loosening of a strict dress code, particularly for men, comes as Japanese offices cut reliance on air conditioning due to high energy costs linked to the Middle East war. On Tuesday, as temperatures in the capital soared to around 34°C, at least five brave men at Watanabe’s office swapped their suits for shorts.
“But once you wear them , you realise just how comfortable they are,” he said. The shorts initiative was announced this spring by Tokyo governor Yuriko Koike, citing “challenging outlook for electricity supply”. It is part of an upgraded version of “Cool Biz”, an energy-saving campaign that encourages bureaucrats to ditch ties and jackets in summer, and which Koike started in 2005 when she was environment minister.
“We encourage ‘cool’ attire that prioritises comfort, including polo shirts, T-shirts and sneakers, and — depending on job responsibilities — shorts,” she told reporters in April. Takayuki Deguchi, a 30-year-old employee at a marketing company that still insists on suits, loves the initiative.
“I think being able to wear shorts that allow you to regulate your temperature when it’s so hot is a very flexible approach,” Deguchi told AFP. However, the campaign has also sparked discussions online over whether short pants are appropriate workwear. Sachie Koike, a 52-year-old realtor, said she was fine with men ditching a tie or jacket in summer — but shorts were a step too far.
“I just don’t think hairy legs look very neat” in the workplace, she added. Last year Japan sweltered through its hottest summer since records began in 1898, according to the Japan Meteorological Agency. Temperatures rising to 40°C and above have become so common that the agency in April unveiled an official designation for these extreme weather events, labelling them “cruelly hot” or “kokusho” days. Scientists say human-driven climate change is making extreme weather more frequent, prolonged and intense.
Tokyo government worker Takuya Ozawa, 38, told AFP that he finds his journey home from work particularly hot in long trousers.
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