Tokyo Metropolitan Government workers are being encouraged to wear shorts, T-shirts, and sneakers to cope with severe summer heat [1].

The policy shift represents a departure from traditional Japanese business attire to reduce energy consumption and costs. This change comes as the city faces rising energy prices linked to conflict in the Middle East [1].

Under the "Tokyo Cool Biz" campaign, staff are urged to forgo jackets and ties [2]. The initiative allows employees to swap formal suits for more breathable clothing and footwear to maintain productivity during the 2026 heatwave [1].

Officials said the move is designed to help employees manage the increasing intensity of summer temperatures. By reducing the reliance on heavy air conditioning in government offices, the city hopes to lower its overall carbon footprint and operational expenses [2].

The transition to casual wear in government offices reflects a broader trend in Japan to modernize workplace norms. While formal attire has long been the standard in public service, the urgency of climate-driven heat is prompting a shift in cultural expectations [2].

Government staff members are now adopting the new guidelines as the city continues to monitor temperature spikes throughout July [1].

Tokyo government workers trade suits for shorts

This policy shift signals a pragmatic intersection of climate adaptation and economic pressure. By relaxing strict dress codes, Tokyo is attempting to mitigate the financial impact of global energy volatility while addressing the public health risks associated with extreme urban heat.