Substitute Senate Bill No. 830 aims to enhance safety standards for preventing heat-related illnesses among employees, particularly in outdoor work environments such as agriculture, construction, and landscaping. Effective October 1, 2025, the bill mandates that employers provide shade when outdoor temperatures exceed eighty degrees, ensure access to potable drinking water, and allow reasonable breaks for employees to cool down. Employers are also required to monitor employees for signs of heat illness and implement emergency response procedures, including first aid measures and access to emergency medical services. The bill introduces new definitions for terms like "drinking water," "emergency medical service," and "heat illness," while deleting previous language that may not align with these new provisions.

In addition to outdoor regulations, the bill establishes requirements for indoor work environments lacking effective air conditioning. Employers must measure and record indoor temperatures when outdoor temperatures exceed eighty degrees and take specific actions when indoor temperatures reach or exceed eighty-two degrees, such as providing cool-down areas and adequate drinking water. The bill also requires employers to develop emergency response procedures for employees exhibiting signs of heat illness and mandates acclimatization practices for new or returning employees. Training on heat illness risks and procedures is also required. Overall, the legislation seeks to improve worker safety and health in high-temperature environments while exempting employees involved in emergency operations.