This report presents information describing labor market conditions for scientists and engineers, focusing only on those scientists and engineers who hold scientific or engineering (S/E) jobs. The scope of this report consists of an analysis of trends in the seventies, an attempt to identify in a qualitative way some of the factors that underlie these trends, and methodological details summarized in the technical notes. Employment data are summarized for major S/E fields, major employment sectors of the economy, and for scientists and engineers primarily engaged in research and development and teaching. (DS)