Intended to inform administrators of vocational-technical education programs, and other interested persons, what the state of the art is in producing and using employment projections for educational planning purposes, this essay focuses on labor market concepts which should be used, but are now frequently abused, in the development and operation of information systems for managing and planning vocational-technical education programs. There are six chapters: (1) Introduction, (2) Employment Projection Models, (3) Employment Projection Methods: Strengths and Weaknesses, (4) Toward an Understanding of Labor Market Concepts and Processes, (5) Educational Planning Uses of Labor Market Concepts, and (6) Mission Impossible? Footnotes and bibliography are included with a note indicating that an integral part of this effort to convey an understanding of labor market concepts and reasons for their misuse or nonuse is a selective citation of relevant items from recent literature dealing with labor market and employment projection issues. (Author/HD)