Japan’s Environment Ministry has been promoting its “Super Cool Biz” campaign, aimed at saving energy in the workplace by allowing employees to wear light clothing, such as Hawaiian shirts and sandals.

The campaign comes after the “Cool Biz” campaign where employees went to work without ties and set air conditioners’ thermostats at a higher-than-usual 28 C to save energy. “Super Cool Biz” has been implemented twice before. The new dress code, under the campaign, includes polo shirts and jeans instead of coats and leather shoes. Employees are also encouraged to start early and cut overtime.

The Japanese government is also promoting “Cool Share”, an initiative which encourages families to get together in one room and use a single air conditioner. Families are also encouraged to go to public venues.