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From Tokyo to London, heatwaves send men to work in shorts - Finance news and analysis from Global Banking & Finance Review
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From Tokyo to London, heatwaves send men to work in shorts

Published by Global Banking & Finance Review

Posted on August 24, 2026

4 min read

· Last updated: August 24, 2026

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Heatwaves Transform Office Dress Codes as Men Choose Shorts from Tokyo to London

How Rising Temperatures Are Changing Workplace Fashion Norms

By Agnieszka Olenska, Helen Reid and James Davey

WARSAW/LONDON, Aug 24 (Reuters) - Scorching summer temperatures have done what decades of dress-down Fridays have failed to do — get men to the office in shorts.

Tokyo Leads the Way with Relaxed Dress Codes

Japan's capital led the way. This year the metropolitan government's long-standing no-tie, no-jacket "Cool Biz" campaign took a step further by encouraging its staff to ditch long trousers, and even try T-shirts and sneakers.

As heatwaves mounted across Europe, other workers followed in Tokyo's wake, sometimes with the encouragement of authorities and management, sometimes without.

European Fashion Retailers Respond to Demand

The Blurring of Commuter and Holiday Styles

LINE BETWEEN COMMUTER AND HOLIDAY STYLES BLURRING

Major retailers told Reuters linen shorts and suits were flying off the shelves in Britain, as men opted for breathable fabrics more commonly associated with Mediterranean climes.

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

Marks and Spencer said sales of men's linen trousers in June to July jumped 183% compared with the same period a year ago.

H&M — one of Europe's biggest fashion retailers — said it was bringing in lighter clothes and delaying the release of autumnal lines to later in the year.

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

Hugo Boss said it has increased its assortment of tailored shorts. Its "Boss by Beckham" range in collaboration with soccer star David Beckham, offers a pair of cotton tailored shorts for €229 ($267.27).

Limits and Pushback in the Workplace

Corporate Dress Code Policies

'SHORTS ARE FOR WEEKENDS'

The trend was there to see in Europe's business hubs, from London's Canary Wharf to the streets of Frankfurt. But there were some limits.

At Norway's largest bank, DNB, staff were welcome to wear shorts and skirts, spokesperson Vidar Korsberg Dalsbo told Reuters.

"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."

In June, Gianfranco Lot, Switzerland head at insurance group Swiss Re, wrote an email to staff with tips on how to stay cool.

Alongside the list of suggestions — such as drinking water, breaking when needed, and taking a dip in Lake Zurich just across from the office — there was a quick reminder that "shorts are for weekends".

Worker Advocacy and Individual Action

Union Support for Relaxed Dress Codes

Pushing back against the traditions, there were signs that some workers were prepared to take a stand for their lighter attire.

Germany's biggest union, IG Metall, and services sector union Verdi both told Reuters they believed dress codes should be relaxed or waived if necessary at times of higher temperatures.

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

Some were already taking matters into their own hands.

Case Study: Warsaw Bus Driver's Protest

In Warsaw, one bus driver decided he had had enough of the standard uniform of long polyester trousers and turned up to work one day this month in a skirt, as a protest.

"These materials make us sweat and overheat," said the man, who only gave his name as Darek.

At the last count, a petition launched by one of his colleagues, asking the Polish capital's transport authority ZTM to let drivers wear shorts during hot weather, had collected more than 400 signatures.

($1 = 0.8568 euros)

(Reporting by Agnieszka Olenska and Alexander Klyve Gudbrandsen in Gdansk, James Davey and Helen Reid in London, Karol Badohal in Warsaw, Christoph Steitz in Frankfurt and Marleen Kaesebier in Zurich; Editing by Andrew Heavens)

Key Takeaways

  • Tokyo’s upgraded “Cool Biz” initiative—originally launched in 2005—now explicitly allows shorts, T‑shirts and sneakers in government offices to help workers cope with extreme heat and cut energy consumption. (reutersconnect.com)
  • In Britain, menswear retailers such as Marks & Spencer have seen dramatic year‑on‑year increases in sales of linen trousers (up +183% June–July), while H&M is delaying autumn collections and Hugo Boss is expanding tailored shorts, reflecting a blurring of commuter and holiday styles amid heatwaves. (womanandhome.com)
  • Tokyo’s push has sparked cultural debate—some women describe “calf‑hair harassment” (‘sune‑hara’) over the visibility of men’s legs in the office—highlighting evolving norms around gender and attire. (lemonde.fr)

References

Frequently Asked Questions

How are heatwaves affecting office dress codes?
Heatwaves are prompting companies to relax dress codes, allowing men to wear shorts, T-shirts, and breathable fabrics at work.
Which cities and companies are leading the change in office attire?
Tokyo started the trend with its 'Cool Biz' campaign, followed by cities like London, Frankfurt, Zurich, and companies including John Lewis, Marks & Spencer, H&M, and Hugo Boss.
Are traditional business dress codes being permanently changed?
There are growing signs that relaxed dress codes may become more common as climate change drives hotter summers and workers push for more comfortable attire.
What kind of clothing is becoming popular in offices during heatwaves?
Linen shorts, lightweight suits, and breathable fabrics are rapidly gaining popularity among male office workers.
Are there any limits to relaxed dress codes in financial institutions?
Some banks like DNB allow shorts and skirts, but generally advocate for smarter, longer garments rather than very casual or revealing styles.

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