working conditions; heat illness; prevention.

SB 1377 requires employers in high-risk industries - including agriculture, construction, landscaping, oil/gas extraction, and delivery work - to implement heat illness prevention measures. It mandates employers provide drinkable water with ice (1 cup every 15-20 minutes at 80°F+, more at 95°F+), access to shade or climate-controlled areas within 400 feet, and paid rest periods (15-45 minutes per hour) when temperatures reach 80°F or higher. Employers must also establish high-heat monitoring (e.g., supervisor checks, buddy systems), emergency response protocols, and require preshift meetings for agricultural workers. The law directly affects workers and employers in the specified industries across Arizona.