Okla. Stat. tit. 85, § 65.2
Every employer and every insurance carrier who schedules any employee as a person employed by the employer for the purpose of paying or collecting insurance premiums on a Workers' compensation insurance policy or who pays, receives or collects any premiums upon any insurance policy covering the liability of such employer under the Workers' compensation law by reason of or upon the basis of the employment of any such employee shall be estopped to deny that such employee was employed by the employer in a hazardous employment subject to and covered by the Workers' compensation law if such person receives an accidental personal injury arising out of and in the course of his employment, during the period for which such premium was so received, regardless of the type of business in which the employer was engaged or the type of employment in which the employee was engaged at the time of such injury.
Added by Laws 1947, HB 234, p. 626, § 2, emerg. eff. April 17, 1947.