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 degrees Celsius, at least five brave men at Watanabe¡¯s office swapped their suits for shorts.

The 50-year-old said he initially found it ¡°embarrassing¡± to bare his legs in the office.

¡°But once you wear them (shorts), you realize just how comfortable they are,¡± he said.

He wears a formal shirt when necessary, but admitted it ¡°feels hot.¡±

The shorts initiative was announced this spring by Tokyo Gov. Yuriko Koike, citing ¡°challenging outlook for electricity supply.¡±

On Tuesday, as temperatures in Tokyo soared to around 34 degrees Celsius, at least five brave men swapped their suits for shorts.
On Tuesday, as temperatures in Tokyo soared to around 34 degrees Celsius, at least five brave men swapped their suits for shorts. | AFP-JIJI

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 prioritizes comfort, including polo shirts, T-shirts and sneakers, and ¡ª depending on job responsibilities ¡ª shorts,¡± she told reporters in April.

The scheme has sparked some envy among other Tokyo workers.

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 said.

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 ¡ª but shorts were a step too far.

¡°I associate them with a day-off,¡± Koike said.

¡°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, labeling 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, said that he finds his journey home from work particularly hot in long trousers.

¡°But it feels nice and cool in shorts.¡±