Okla. Stat. tit. 36, § 1528

The insurer shall have the right to an opportunity for a confidential departmental hearing, on the record, at which the insurer may challenge any determination or action by the Commissioner. The insurer shall notify the Commissioner of its request for a hearing within five (5) days after the notification by the Commissioner of a decision affecting the insurer's substantial rights. Upon receipt of the insurer's request for a hearing, the Commissioner shall set a date for the hearing, which date shall be no less than five (5) days after the date of the insurer's request. The Commissioner may deny a request for hearing if the request is frivolous, or if no factual issues are presented.