Professions and occupations; Oklahoma Worker Heat and Protection Act; definitions; safety requirements; water requirements; safety training; codification; effective date.

HB 4084, the Oklahoma Worker Heat Safety and Protection Act, requires employers to protect outdoor and heat-exposed workers when the heat index reaches 80°F or higher. The bill mandates paid rest breaks (15-20 minutes hourly based on heat levels), access to shaded areas, and cool drinking water (at least 32 ounces per hour at or below 77°F). Employers must provide heat safety training, post workplace notices, develop acclimatization plans for new workers, and establish emergency response procedures for heat illness. The law applies statewide to all non-emergency workplaces and takes effect November 1, 2026.