The following conclusions were drawn from the results of the study: (1) Jobs can be viewed from a framework of the activities that the incumbent performs; yet this framework need not be so specific that it cannot be generalized across different jobs, occupations, industries or geographical areas. (2) The application of psychological scaling techniques to the measurement of job variables is quite fruitful, even in the light of the effort that must be expended in scale construction. In each reliability study, the average reliability of the scaled items was clearly superior to that of the other items. (3) The factor analyses of worker-oriented variables defined a number of dimensions which seemed to be both meaningful and potentially useful. It was especially encouraging to note relationships between the factors emerging from this study, and those found in other studies of worker traits or job requirements.