A study examined the actual and projected impact of automation on employment between 1963 and 2000. Utilizing a fully integrated, dynamic input-output model that was designed for this study, the researchers analyzed a large body of quantitative information from diverse, especially technical, sources. This effort resulted in the development of a detailed model of the probable effects of automation on the demand for labor services in 53 occupations. According to this model, the intensive use of automation over the next 20 years will make it possible to conserve about 10 percent of the labor that would have been required to produce the same bills of goods in the absence of increased automation. The impact of automation is specific to different types of work and will involve a significant increase in professionals as a proportion of the labor force and a steep decline in the relative number of clerical workers. Because the direct displacement of production workers by specific items of automated equipment will, at least in the initial stages, be offset by increased investment demand for capital goods, production workers can be expected to maintain their share of the labor force. (MN)