Okla. Admin. Code § 810:20-1-2
In addition to the terms defined in 85A O.S., § 2, the following words and terms, when used in this Chapter, shall have the following meaning, unless the context clearly indicates otherwise:
"AWCA" means the Administrative Workers' Compensation Act, 85A O.S., §§ 1, et seq.
"Claimant" means a person who claims benefits for an alleged work injury, occupational disease or illness, or death pursuant to the provisions of the AWCA, 85A O.S., §§ 1, et seq.
"Commission" means the Oklahoma Workers' Compensation Commission, a designee, or an administrative law judge to whom the Commission has delegated responsibility as authorized by 85A O.S., § 21(D).
"Disabled" means rendered unable, as the result of a work-related injury, to perform work for which the person has previous training or experience.
"Gainful employment" means the capacity to perform employment for wages for a period of time that is not part-time, occasional or sporadic.
"Insurance carrier" means any stock company, mutual company, or reciprocal or interinsurance exchange authorized to write or carry on the business of workers' compensation insurance in this state, and includes an individual own risk employer or group self-insurance association duly authorized by the Commission to self fund its workers' compensation obligations.
"Pre-injury or equivalent job" means the job that the claimant was working for the employer at the time the injury occurred or any other employment offered by the claimant's employer that pays at least one hundred percent (100%) of the employee's average weekly wage.
"Vocational rehabilitation" means the process of restoring the vocational functioning of a worker who experiences a work-related injury.
"Vocational rehabilitation services" means professional services reasonably necessary during or after, or both during and after, medical treatment to enable a disabled injured employee to return to gainful employment as soon as practical. "Vocational rehabilitation services" includes vocational evaluation, retraining and job placement.
"Work-related injury" means a single event injury, cumulative trauma injury, or occupational injury or illness that arises out of and in the course of employment as provided in the AWCA.
Okla. Admin. Code § 810:20-1-2