Okla. Stat. tit. 36, § 319

In conducting any hearing pursuant to the Insurance Code, the Insurance Commissioner may appoint an independent hearing examiner who shall sit as a quasi-judicial officer. The ordinary fees and costs of such hearing examiner shall be assessed by the hearing examiner against the respondent, unless the respondent is the prevailing party. Within thirty (30) days after termination of the hearing or of any rehearing thereof or reargument thereon, unless such time is extended by stipulation, a final order shall be issued.