Health Administration must develop a standard to protect workers from the significant risks of heat-related illness and death. 2. OSHA safety standard for exposure to heat and hot environments (a) Proposed standard Not later than 2 years after the date of enactment of this Act, the Secretary of Labor shall, pursuant to section 6(b) of the Occupational Safety and Health Act ( 29 U.S.C. 655 ), promulgate a proposed standard on prevention of occupational exposure to excessive heat. (b) Final standard Not later than 42 months after the date of enactment of this Act, the Secretary shall promulgate a final standard on prevention of occupational exposure to excessive heat that shall— (1) provide no less protection than the most protective heat prevention standard adopted by a State plan that has been approved by the Secretary under section 18 of the Occupational Safety and Health Act of 1970 ( 29 U.S.C. 667 ) and, at a minimum, include the requirements described in section 4