Intended for researchers and policy developers in education and labor market economics, this study reviews, evaluates, and summarizes available information concerning the characteristics of occupationally mobile workers and their jobs. Chapter 1 presents basic concepts and definitions, a review of problems in empirical measurement of mobility, and a brief discussion of problems of occupational classification. Chapter 2 provides brief overviews of several labor market theories, suggests their implications for occupational mobility, and presents a review of empirical mobility studies related to labor market theories. Using the same format, chapter 3 deals with sociological theories and evidence, while chapter 4 deals with theories from vocational psychology and related evidence. Chapter 5 overviews and summarizes the empirical literature and suggests directions for future research. Appendix 1 provides an annotated bibliography of the empirical studies reviewed, including this information for each study: thesis, data, methods, results, and limitations. Appendix 2 provides technical information on the major data sources used in the empirical studies with this information provided: primary source, description, and limitations. (Appendixes comprise over one-half of the document. The table of contents may be used as a cross-reference to surveys cited.) (Author/YLB)