Section 591.240 - How are agency and employee representatives involved in the administration of the COLA and post differential programs?(a) OPM may establish a COLA Advisory Committee in each COLA survey area. The committees are composed of agency and employee representatives from the COLA survey area and one or more representatives from OPM.(b) To the extent practical, the COLA Advisory Committees coordinate and work with the Survey Implementation Committee established pursuant to Caraballo, et al. v. United States, No. 1997-0027 (D.V.I).