Any person holding an appointive office in any of the offices, departments or institutions of this state shall hold the same for an indefinite term not exceeding four years, or for the term specified for the office by law. A person holding an appointive office shall at all times serve at the pleasure of and be subject to removal by the appointive power that made the appointment unless a different standard for removal from the office is specified by law. The appointive power may in all cases appoint a successor.
ORS 236.140