Summer Heatwaves Force Dress Code Changes Across Global Offices

Escalating summer temperatures pushed corporate offices and public transport systems across major business hubs in Asia and Europe to relax long-standing formal dress codes on August 24, 2026, permitting lighter attire like shorts.

Tokyo led the international shift after the metropolitan government expanded its long-running Cool Biz campaign, encouraging staff members to swap traditional trousers for T-shirts, sneakers, and shorts to cope with intense heat.

Retailers across Europe reported massive surges in demand for breathable fabrics as workers adapted to the changing climate. British department store Marks and Spencer recorded a 183 percent jump in men's linen trouser sales during June and July compared to the prior year. Major fashion retailer H&M responded by shifting toward lighter inventory and delaying autumn line releases, while Hugo Boss expanded its tailored shorts lineup, including a David Beckham collaboration priced at 229 euros or 267.27 dollars.

"The lines between 'commuter' and 'holiday' style are blurring," said Martha Hibberd, menswear buyer at British department store John Lewis.

Major clothing brands view the shift in professional attire as a permanent adjustment to changing global weather patterns.

"It looks like we're not going back when it comes to climate change," said Andreas Lowenstam, head of menswear design at H&M.

Despite widespread relaxations, some financial institutions maintained boundaries regarding acceptable office wear. DNB, the largest bank in Norway, permitted shorts and skirts while setting clear expectations for professional modesty.

"However, we are probably talking about smarter garments with some length rather than a ballerina skirt or a cheeky pair of 1970s-style soccer shorts," said Vidar Korsberg Dalsbo, spokesperson for DNB.

In Switzerland, management at Swiss Re advised staff on managing the heat wave while establishing limits on professional wardrobe choices.

"Shorts are for weekends," wrote Gianfranco Lot, Switzerland head at Swiss Re, in an email to employees detailing heat safety tips like drinking water and swimming in Lake Zurich.

Labor organizations in Germany actively pushed for policy shifts, advocating for formal dress code waivers to protect employee health during extreme weather events.

"Summers are getting hotter, heat waves are becoming more frequent, and the strain on workers is noticeably increasing," said Moriz Tiedemann, occupational health expert at IG Metall.

Labor unions including Verdi joined IG Metall in calling for broader workplace flexibility as heat conditions persist. Meanwhile, field workers took direct action. In Warsaw, a bus driver identified as Darek wore a skirt to work in protest of polyester uniform pants that cause overheating, while a colleague's petition asking transport authority ZTM to permit shorts gathered over 400 signatures.

"These materials make us sweat and overheat," said Darek, bus driver in Warsaw.