A facet design describing the theoretical and empirical interrelationships among five forms of work commitment (Protestant work ethic, career salience, job involvement/work as a central life interest, organizational commitment, and union commitment) is presented. The analysis reveals that these concepts are partially redundant and insufficiently distinct to warrent continued separation. Suggestions for advancing the study of work commitment are rendered. Review, 1983, Vol. 8, No. 3, 486-500. Concept Redundancy in Organizational In order to accomplish these objectives, a research procedure known as facet design (Guttman, 1954;Shapira & Zevulun, 1979) is employed. Facet design is a research methodology that entails, in part, the inductive generation of criteria that reveal similarities and differences among a set of related concepts. The procedure can be used for taxonomy, hypothesis generation, or hypothesis testing purposes and previously has been used to bring order to research areas marked by conceptual chaos-for example,