Oregon Revised Statutes Public Officers and Employees § 242.724

(1) The commission shall make suitable regulations not inconsistent with ORS 242.702 to 242.824 to carry out the provisions thereof. The regulations shall provide in detail the manner in which examinations shall be held, and appointments, promotions, demotions, transfers, reinstatements, suspensions and discharges shall be made. The rules and regulations together with all amendments thereto shall be posted in the fire department and shall be available for inspection in the secretary's office for public inspection. The rules and regulations shall not limit the personal citizenship rights of any members of the fire department.

(2) The chief examiner or the agency designated by the commission shall conduct such examinations as necessary. The commission shall assess such weights on examinations as they deem necessary.