Okla. Stat. tit. 40, § 40-500: Nonsmoking as condition of employment

A. It shall be unlawful for an employer to:

1. Discharge any individual, or otherwise disadvantage any

individual, with respect to compensation, terms, conditions or

privileges of employment because the individual is a nonsmoker or

smokes or uses tobacco products during nonworking hours; or

2. Require as a condition of employment that any employee or

applicant for employment abstain from smoking or using tobacco

products during nonworking hours.

B. Nothing in this section shall prohibit an employer from

offering incentives to an employee to participate in wellness

programs, including, but not limited to, smoking cessation programs,

in conjunction with the employer providing the employee health

insurance coverage.