As used in this act, unless the context requires otherwise:
(1) "Commission" means the Oklahoma Corporation Commission.
(2) "Common carrier by rail" means a railroad company operating any part of its system within this state.
(3) "Motor vehicle" means any vehicle which is self-propelled.
(4) "Owner" means any person having the lawful use or control of a motor vehicle as holder of the legal title of the motor vehicle or under contract or lease or otherwise.
(5) "Place of employment" means that location where one or more workers are actually performing the labor incident to their employment.
(6) "Worker" means an individual employed for any period in any work for which he is compensated, whether full or part time.
Laws 1965, c. 385, § 1, emerg. eff. June 30, 1965.