Japan Recommendation of occupational exposure limits-Occupational exposure limits for chemical substancesonal exposure limits for chemical substances

Recommendation of occupational exposure limits-Occupational exposure limits for chemical substances is published by the Japan Society for Occupational Health (JISHA/JSOH) and is the most authoritative technical guide for occupational health in Japan. Updated annually, this recommendation covers limit parameters—including 8-hour TWA, 15-minute STEL, and skin absorption notations—for hundreds of industrial chemicals. Although not directly legally binding, it is widely adopted as the benchmark standard for workplace risk assessment and exposure control in Japan, applicable to occupational health management in manufacturing, chemical, and electronics industries.