The report provides a detailed review of the seven and one-half year Mississippi Labor Mobility Project, STAR, Inc., whose operations and research concerned the utility and feasibility of subsidizing worker relocation assistance to the unemployed/underemployed poor for the purposes of improving their economic and social opportunities. Almost 2,500 individuals and their families, at a cost of $2.2 million, were moved from areas of very limited employment opportunities to areas of expanding employment opportunities. The document provides: major policy recommendations; summary of project findings; research design and data base; description of the project populations (applicants and relocatees); sociological analysis of relocation stability (causes, benefits, and costs); an evaluation of the economic impact of the project on program participants; and a measure of project effectiveness (benefit/cost analysis and stayer/leaver model). Two phases of research were accomplished: development of organizational/operational designs for relocating the unemployed/underemployed poor and determination of the success of relocation in terms of individual relocatee gains and societal costs and benefits through investment of public funds. Appended materials include: benefit/cost analysis; model for predicting relocation stability; survey of employers' evaluations; and an annotated list of major project reports. (Author/MW)