The types and functions of the agencies needing occupational information for use in career counseling vary greatly. For example, career and guidance counseling is often supplied by a wide variety of individuals, including general education teachers, rehabilitation counselors, employment service counselors, Comprehensive Employment and Training Act (CETA) counselors, vocational education teachers, and school counselors. Among the forms that such counseling is likely to take are the following: testing, group counseling, individual counseling, and group guidance. To be of maximum use to the widest possible audience, an occupational information system designed to aid career guidance and counseling efforts must contain information pertaining to occupational demand and supply, occupational characteristics, complementary information, and supply and demand analysis. While various career and labor market information is available from governmental or commercial sources, much of this information is prepared primarily for distributional purposes and, as such, does not meet the needs of school-based career education and guidance programs. To fill the need for information capable of giving students a broad understanding of occupational structure and points of access to the labor market, states should provide inservice training to familiarize teachers and counselors with the occupational system and should expand delivery of the system to diverse subpopulations. (MN)