Okla. Const. art. IX, § 19

In all matters pertaining to the public visitation, regulation, or control of corporations, and within the jurisdiction of the Commission, it shall have the powers and authority of a court of record, to administer oaths, to compel the attendance of witnesses, and the production of papers, to punish for contempt any person guilty of disrespectful or disorderly conduct in the presence of the Commission while in session, and to enforce compliance with any of its lawful orders or requirements by adjudging, and by enforcing its own appropriate process, against the delinquent or offending party or company (after it shall have been first duly cited, proceeded against by due process of law before the Commission sitting as a court, and afforded opportunity to introduce evidence and to be heard, as well against the validity, justness, or reasonableness of the order or requirement alleged to have been violated, as against the liability of the company for the alleged violation), such fines or other penalties as may be prescribed or authorized by this Constitution or by law. The Commission may be vested with such additional powers, and charged with such other duties (not inconsistent with this Constitution) as may be prescribed by law, in connection with the visitation, regulation, or control of corporations, or with the prescribing and enforcing of rates and charges to be observed in the conduct of any business where the State has the right to prescribe the rates and charges in connection therewith, or with the assessment of the property of corporations, or the appraisement of their franchises, for taxation, or with the investigation of the subject of taxation generally. Any corporation failing or refusing to obey any valid order or requirement of the Commission, within reasonable time, not less than ten days, as shall be fixed in the order, may be fined by the Commission (proceeding by due process of law as aforesaid) such sum, not exceeding five hundred dollars, as the Commission may deem proper, or such sum, in excess of five hundred dollars, as may be prescribed or authorized by law; and each day's continuance of such failure or refusal, after due service upon such corporation of the order or requirement of the Commission, shall be a separate offense: Provided, That should the operation of such order or requirement be suspended, pending any appeal therefrom, the period of such suspension shall not be computed against the company in the matter of its liability to fines or penalties.