Oregon Revised Statutes Public Officers and Employees § 241.530

(1) No recommendation, other than those allowed by the rules of the commission, in favor of any person who applies for any position under civil service, or for examination or registration under ORS 241.016 to 241.990, except as to residence, character, and, in case of former employees, as to ability, when a recommendation as to character or ability is specifically required by the rules, shall be given to or considered by any person concerned in making any examination, registration, appointment or promotion under ORS 241.016 to 241.990.

(2) No recommendation under ORS 241.016 to 241.990 shall relate to the religious or political opinions, affiliations or services of any person. No appointment, change in or removal from, any position under ORS 241.016 to 241.990 shall be affected or influenced in any way by such opinions, affiliations or services.