Not necessarily. You can teach a course each semester and still be in a position that is primarily administrative. The University’s policy, PROV-008, Teaching Courses for Academic Credit, allows those who are not academic faculty to teach a course. Those individuals (who might be staff, professional research staff, or administrative or professional faculty), if necessary, receive a temporary appointment as a lecturer in the department for which they will teach but their fundamental employment status as staff, etc., remains unchanged and they continue to be governed by the policies relevant to that status. For more information, see PROV-008.