Okla. Stat. tit. 40, § 40-160: Mandated minimum wage - Minimum number of vacation or sick

leave days.

As a matter of public policy and due to an overriding state

interest, the Legislature hereby occupies and preempts the entire

field of legislation in this state touching in any way mandated

minimum wage and employee benefits regarding mandatory minimum

number of vacation or sick leave days. Notwithstanding any

exemption from state statutes previously allowed for certain

municipalities pursuant to Section 1-101 of Title 11 of the Oklahoma

Statutes, no municipality or other political subdivision of this

state shall establish a mandatory minimum number of vacation or sick

leave days, whether paid or unpaid, or a minimum wage rate which an

employer would be required to pay or grant employees. Any existing

or future ordinances, orders or regulations in this field, except as

may be specifically provided in this section, are null and void.

The provisions of this section shall not affect the minimum

number of vacation or sick leave days, whether paid or unpaid,

authorized by a municipality for its employees as a benefit of

employment.