Oregon Revised Statutes Crimes and Punishments § 161.205

(2) An authorized official of a jail, prison or correctional facility may use physical force when and to the extent that the official reasonably believes it necessary to maintain order and discipline or as is authorized by law.

(3) A person responsible for the maintenance of order in a common carrier of passengers, or a person acting under the direction of the person, may use physical force when and to the extent that the person reasonably believes it necessary to maintain order, but the person may use deadly physical force only when the person reasonably believes it necessary to prevent death or serious physical injury.

(4) A person acting under a reasonable belief that another person is about to commit suicide or to inflict serious physical self-injury may use physical force upon that person to the extent that the person reasonably believes it necessary to thwart the result.

(5) A person may use physical force upon another person in self-defense or in defending a third person, in defending property, in making an arrest or in preventing an escape, as hereafter prescribed in chapter 743, Oregon Laws 1971.