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2025-06-01Work

🥵 Mandatory Workplace Heatstroke Measures

Effective June 1, 2025 — employers must act for hot-environment work, with penalties

What is changing?

Under the revised Industrial Safety and Health Regulation, employers must now take heatstroke measures at the workplace. It applies to work expected to last over 1 continuous hour, or more than 4 hours a day, in environments of WBGT (heat index) 28°C+ or air temperature 31°C+. Employers have two main duties: (1) build a system so a worker feeling symptoms — or anyone who notices — can promptly report and consult; and (2) set out procedures in advance to prevent symptoms from worsening (leaving the task, cooling the body, and transport to a medical facility if needed), and make them known to relevant workers.

👥 Who is affected?

  • Foreign workers in hot conditions — construction, manufacturing, farming, logistics
  • Technical interns and specified-skilled workers in outdoor or hot indoor jobs
  • Every employer who hires such workers
  • Students doing long outdoor part-time work in the hot season

🌏 Impact on foreigners

Construction and manufacturing make up about 40% of workplace heatstroke casualties — fields employing many foreign workers. This reform protects workers: the law now backs a system where you may report feeling unwell instead of enduring it. It especially helps those who find it hard to speak up because of the language barrier. Employers who neglect measures face penalties. If your worksite shows no reporting system or rest/cooling procedures, you have every right to ask about them.

💡 Key points to know

1Covers work at WBGT 28°C+ or 31°C+ air temp expected to last 1+ continuous hour or 4+ hours a day
2Employers have two core duties: (1) a reporting/consulting system, (2) written worsening-prevention steps made known
3Violating employers may face up to 6 months in prison or a ¥500,000 fine
4If symptoms appear (dizziness, nausea, heavy sweating), report and rest immediately — do not endure
5Frequent water and salt intake and resting in a ventilated or air-conditioned spot are basic prevention
6If your workplace shows no measures, you can consult the Labor Standards Inspection Office

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