This report summarizes the deliberations of the Office of Scientific and Engineering Personnel's Committee on Data Needs for Monitoring Labor-Market Conditions for Engineers. The purpose of this report is to help the profession make existing data bases on engineers more complete, accurate, and compatible. The report is also intended to help funding agencies with their data collection and analytic efforts in the 1990s. The current data bases were evaluated in terms of occupational mobility and flow dynamics, technical currency, international flows of engineers, and the role of underrepresented groups in engineering. Two major conclusions were reached: (1) current data bases are quite valuable in understanding engineering labor markets; and (2) the value of data bases can be increased significantly by improved cross-correlation, dissemination of unpublished materials, and the increase of their longitudinal nature. Fifteen recommendations are included. Four appendices are included. The first is a background paper by Engin Inel Holstrom which includes an overview of engineering databases, specific data on databases produced by 10 organizations, and outlines of engineering taxonomies. The remaining three appendixes provide the agenda, a list of 60 participants, and an 11-page summary of discussions of a Workshop on Data Needs for the 1990s, held March 28, 1988. (ML)