The Commission is composed of fifteen members who serve in their personal capacity. They are appointed by the General Assembly for four-year terms, with due regard for broad geographical representation. The Chairman and the Vice-Chairman are full-time members and are based in New York. The full Commission meets twice a year.
ICSC is assisted by an expert subsidiary body, the Advisory Committee on Post Adjustment Questions (ACPAQ), which provides technical advice on the methodology of the post adjustment system. Other working groups and panels are established on an ad hoc basis as the need arises.
ACPAQ is composed of six members and is chaired by the Vice Chairman of ICSC. The current members of ACPAQ are:
The chief of the Cost-of-Living Division serves as secretary to ACPAQ.
ACPAQ usually meets every year to review methodological and other technical issues related to the operation of the post adjustment system, and makes recommendations for ICSC's consideration and approval.