Japan Updates Industrial Safety Law to Strengthen Worker Protection

Japan has strengthened its workplace safety framework under the Industrial Safety and Health Act (ISHA) with the addition of 157 new chemical substances to its regulated list. The update, announced by the Ministry of Health, Labour and Welfare (MHLW) on 27 March 2025, reflects the government’s continued commitment to protecting worker health and ensuring safer industrial environments.

Purpose of ISHA

The Industrial Safety and Health Act aims to safeguard workers’ health and safety across all industries in Japan. It establishes hazard prevention standards, assigns safety responsibilities to employers, and promotes voluntary accident prevention efforts in tandem with the Labor Standards Act.

Key Objectives

• Minimize workplace hazards (e.g., chemical exposure, machinery accidents)
• Support both physical and mental health of workers
• Clarify responsibilities between employers and employees

Who Must Comply?

All employers in Japan, regardless of industry, must comply with ISHA. Specific obligations vary based on company size, industry, and risk level.

Main Legal Requirements

• Risk Assessments for hazardous chemicals, machinery, and other workplace risks
• Appointment of Safety Personnel, such as:

o General Safety and Health Manager
o Industrial Physician
o Safety and Health Officers

• Mandatory Health Checks for employees
• Safety Standards for buildings, tools, and chemical handling
• Accident Reporting obligations for serious incidents
• Worker Training and PPE Requirements
• Mental Health Measures, including stress check programs

Latest Chemical Additions

The March 2025 update adds 157 new chemicals to the official ISHA New Chemicals List. These substances join 131 chemicals added in December 2024,<.b> reflecting Japan’s ongoing effort to monitor emerging chemical risks in the workplace.