MA H3995

Establishes temperature stress thresholds at 80°F for heat and 60°F for cold, requiring employers to implement written mitigation programs when these thresholds are reached at indoor or outdoor worksites

Mandates paid preventative rest breaks of at least 10 minutes every 2 hours when temperatures reach thresholds, increasing to every hour when temperatures exceed 100°F

Requires employers to provide free drinking water (minimum 1 quart per hour per employee), shade or cool-down areas for heat conditions, and warm-up areas with warm beverages for cold conditions

Establishes acclimatization requirements for new employees, limiting first-day exposure to 20% of normal work duration with gradual increases over 2 weeks

Requires free annual training for employees on temperature illness symptoms, emergency procedures, and protective equipment, with protections against retaliation for reporting hazardous conditions