Okla. Const. art. IX, § 36

The common law doctrine of the fellow-servant, so far as it affects the liability of the master for injuries to his servant, resulting from the acts or omissions of any other servant or servants of the common master, is abrogated as to every employee of every railroad company and every street railway company or inter-urban railway company, and of every person, firm, or corporation engaged in mining in this State; and every such employee shall have the same right to recover for every injury suffered by him for the acts or omissions of any other employee or employees of the common master that a servant would have if such acts or omissions were those of the master himself in the performance of a non-assignable duty; and when death, whether instantaneous or not, results to such employee from any injury for which he could have recovered under the above provisions, had not death occurred, then his legal or personal representative, surviving consort or relatives, or any trustee, curator, committee or guardian of such consort or relatives, shall have the same rights and remedies with respect thereto, as if death had been caused by the negligence of the master. And every railroad company and every street railway company or inter-urban railway company, and every person, firm, or corporation engaged in underground mining in this State shall be liable under this section, for the acts of his or its receivers.

Nothing contained in this section shall restrict the power of the Legislature to extend to the employees of any person, firm, or corporation, the rights and remedies herein provided for.