OK HB4084

Establishes the Oklahoma Worker Heat Safety and Protection Act, applying to all employers when the worksite heat index reaches or exceeds 80°F, with exemptions for emergency response and essential service restoration activities

Requires tiered paid rest breaks based on heat index: 15 minutes every 4 hours at 80-90°F, 15 minutes every 2 hours at 91-102°F, and 20 minutes every hour at 103°F or above

Mandates employers provide free access to cool potable water (at least 32 ounces per hour, maintained at or below 77°F), shaded or ventilated rest areas near work locations, and alternative cooling methods like cooling vests if shade is unavailable

Requires heat safety training for new employees before heat exposure and annually thereafter, covering illness recognition, hydration, acclimatization, emergency procedures, and worker/supervisor responsibilities

Prohibits retaliation against employees who take required breaks, report symptoms, file complaints, or refuse unsafe work; authorizes the Oklahoma Department of Labor to investigate violations and impose penalties, with remedies including reinstatement and back pay