Oregon Revised Statutes Public Officers and Employees § 242.728

(1) In the course of an investigation, the commission may administer oaths, subpoena witnesses and compel the production of books, papers, documents and accounts pertinent to the investigation. Attendance of witnesses, either with or without books, papers, documents or accounts, may not be compelled unless such witnesses are personally served with subpoena.

(2) The commission may cause the deposition of witnesses residing within or without the state to be taken in the manner prescribed by law for like depositions in civil suits and actions.

(3) If a person refuses to attend to give testimony or produce books, papers, documents or accounts, pursuant to a subpoena issued under this section, the circuit court of the county in which the political subdivision is located, upon petition of the commission, shall compel obedience to the subpoena and shall punish refusal to obey or to testify in the same manner as a refusal to obey a subpoena or to testify pursuant to a subpoena issued from the circuit court.