No agreement by an employee to pay any portion of the premium paid by his or her employer to a carrier or a benefit fund or department maintained by the employer for the purpose of providing compensation or medical services and supplies as required by this act shall be valid. Any employer who makes a deduction for such purposes from the pay of any employee entitled to the benefits of this act shall be guilty of a misdemeanor.
Okla. Stat. tit. 85a, § 9