ORS 179.140: Auditing and paying claims; approval of vouchers.

Subject to any applicable provision of ORS 279A.125, 279A.255, 279A.275, 279A.280, 279A.285, 279A.290, 279B.025, 279B.240, 279B.270, 279B.275, 279B.280, 283.110 to 283.395 and 291.232 to 291.260, all claims for supplies or materials furnished or services rendered to institutions shall be audited and approved as provided by law, upon the presentation of duly verified vouchers therefor, approved in writing by the Director of the Department of Corrections, the Director of Human Services or the Director of the Oregon Health Authority, or by their designees.