This study involves all distributive education state supervisory and teacher education personnel in the United States, 48 distributive education teacher coordinators, and 400 distributive workers at the entry, supervisory, and management levels. This document, Volume III, includes the critical tasks, competencies needed to perform the tasks, and a cross tabulation of competencies needed by workers in selected categories of food stores, service stations, and wholesaling. Volume II (VT 005 974) and Volume IV (VT 005 976) include the same information for the areas of department stores, variety stores, hotels-motels, and restaurants. Volume I (VT 005 973) includes a philosophy of distributive education, the critical tasks of the high school distributive education teacher coordinator, the professional competencies needed to perform the critical tasks, the technical competencies needed to develop identified competencies of selected distributive workers and a cross tabulation of competencies needed by selected distributive workers. Volume V (VT 009 085) includes final reports of Phases II and III of the study. (MM)