Okla. Stat. tit. 40, § 40-199.3: Notice as to strike or lockout

It shall be unlawful for any person, partnership, agency, firm

or corporation, or officer or agent thereof, to recruit, solicit or

advertise for employees, or refer persons (excluding employees or

persons who are permanent employees of the employer involved in such

strike or lockout) to employment, in place of employees involved in

a strike or lockout, without adequate notice to such person, or in

such advertisement, that there is a strike or lockout at the place

at which employment is offered, and that the employment offered is

in place of employee involved in such strike or lockout.