Substitute Senate Bill No. 830 aims to enhance workplace safety by establishing comprehensive standards to prevent heat-related illnesses, particularly for employees working outdoors in high-temperature environments such as agriculture, construction, and landscaping. Effective October 1, 2025, the bill mandates that employers provide shade areas when outdoor temperatures exceed eighty degrees, ensure access to free drinking water, and allow reasonable breaks in shaded areas. Additionally, it requires employers to develop emergency response procedures for employees showing signs of heat illness and implement acclimatization practices for new or returning employees. Specific measures are outlined for when temperatures reach 80 and 90 degrees, including monitoring for heat illness and providing scheduled cool-down breaks.

For indoor work environments, the bill requires employers to measure and record temperatures when outdoor temperatures exceed eighty degrees and take action if indoor temperatures reach or exceed eighty-two degrees. This includes establishing cool-down areas, providing adequate drinking water, and allowing breaks to prevent overheating. Employers must also monitor temperatures and implement control measures when indoor temperatures reach eighty-seven degrees. The bill emphasizes training for employees on heat illness risks and emergency procedures, while exempting employees engaged in emergency operations that protect life or property. Various amendments for clarity and consistency in legal language are also included, such as changing "provide" to "establish and maintain."