The revision of the United States Employment Service (USES) Interest Check List (ICL) is described. The ICL was designed as an aid to Employment Service counselors by helping counselees to become more aware of the variety of occupational fields that exist and to identify their occupational interests as a basis for occupational exploration. The development of the 1979 edition of the ICL was oriented to the "Guide for Occupational Exploration" (GOE) which contains an occupational structure consisting of 12 interest areas, 66 work groups, and 348 subgroups. Work on the revision of the ICL and the development of the GOE was carried out simultaneously. Item construction and changes in format and graphics are described. The occupational structure of interest areas, work groups, and subgroups in the GOE; and the ICL with instructions for administering and using the ICL are included in the appendices. (Author/PN)