Councilors-at-Large (CALs) serve a three-year term. One CAL is elected each year, three-year terms of each CAL do not run concurrently, and thus CALs are identified as Senior Councilor-at-Large, and two appointed as Councilor-at-Large, based on the numbers of years in office (Article IV of the APS Constitution). A newly elected CAL assumes office at the meeting of the new Council at the annual meeting. A CAL cannot simultaneously hold another office of the society during the term of office as councilor.
Specific Responsibilities of Senior Councilor-at-Large