Labor market information (LMI) describes the interaction between occupations and employers. Three major components make up LMI: economic or labor force information, occupational information, and demographic information. Various agencies, including federal departments and state employment security agencies, compile LMI. A guide to the information is the network of the National Occupational Information Coordinating Committee and the State Occupational Information Coordinating Committees. The three most common types of LMI classification (and the major federal publications that use them) are by occupation (Dictionary of Occupational Titles, Standard Occupational Classification Manual, and Guide for Occupational Exploration), by industry (Standard Industrial Classification Manual), and by instructional program (A Classification of Instructional Programs). Criteria to assess the quality of sources of LMI include reliability, comprehensiveness, timeliness, and credibility of the developer. Resources to help teachers and counselors make better use of LMI in career decision making include "A Training Handbook for Using Labor Market Information in Career Exploration and Decision Making: A Resource Guide,""Career Information in the Classroom: Workshop Guide for Infusing the Occupational Outlook Handbook," and "Improved Career Decision Making through the Use of Labor Market Information Trainer's Guide." (YLB)