Okla. Admin. Code § 310:2-21-3
The Commissioner, the Chief Administrative Law Judge or the assigned administrative law judge shall schedule the date, time and place of any hearing in accordance with these rules. The Hearing Clerk shall notify the parties. The initial hearing shall be scheduled at least thirty (30) days after the date of service of the petition. The parties may agree to an earlier date. If a specific law requires a hearing in fewer days, that statute shall be followed. If an emergency exists, a hearing may be conducted without the filing of a petition and without prior notice to the Respondent. When such emergency hearing is held the Respondent shall be afforded a hearing within ten (10) days of the issuance of an emergency order to contest such an order.
Okla. Admin. Code § 310:2-21-3