A. Title 85 of the Oklahoma Statutes and Court rules of workers' compensation practice and procedure in effect before February 1, 2014, and interpretive case law of such provisions, are incorporated herein by reference. Single event injuries or deaths are subject to the workers' compensation statutory law and Court rules of practice and procedure in effect on the date of injury or death, as applicable. Cumulative trauma injuries or occupational diseases or illnesses are subject to the workers' compensation statutory law and Court rules of practice and procedure in effect at the time the employee knew or should have known that the cumulative trauma injury, occupational disease or illness was related to work activity.

B. Any matter of practice or procedure not specifically dealt with by Title 85 of the Oklahoma Statutes or by these rules will be guided by practice or procedure followed in the district courts of this state.