Conflicts between the work boundaries established by union contracts and management's interest in efficient work flows have increased sharply as new technology and new management practices make traditional divisions in the organization of work obsolete. We use concepts from organizational theory to examine these conflicts and an innovative attempt to resolve them by defining union boundaries not on the basis of tasks performed, but rather on the basis of employment; the union contract applies to specific workers instead of job titles. This system provides greater flexibility and autonomy for employees, and the results of an attitude survey suggest that it is strongly preferred by workers who feel constrained by traditional union contracts.