Upon proper service of petition and notice to the Respondent, the Commission shall hold an Assessment Hearing. All motions shall be considered and ruled on by the Commission prior to the consideration of the petition. At the hearing on the petition, each party may make an opening statement; present witnesses, documents and exhibits on its behalf; cross-examine adverse witnesses; present rebuttal witness; and make closing arguments. The rules of evidence shall be those specified by the APA.
Okla. Admin. Code § 422:15-5-5