Oregon Revised Statutes Public Officers and Employees § 242.730

Every person served with a subpoena requiring attendance before the commission shall be entitled to the fees and mileage as are allowed by law to witnesses in ORS 44.415 (2), except that no person shall be entitled to any fees or mileage who is employed in the public service of the political subdivision in which the person is called as a witness. The fees and mileage allowed by this section need not be prepaid, but the governing body of the political subdivision shall provide for payment thereof when certified by the commission.