In this introduction to the volume on Workforce Diversity, we review some of the critical issues that need to be addressed in thinking about and doing research on workforce diversity, and then we discuss where the topics addressed in this volume fit within the larger literature on diversity at work and how the contributions in the volume advance our understanding of workforce diversity. By necessity this is a brief overview. The papers in this volume elaborate some of the issues, but a great deal more needs to be done to fully understand how diversity both affects and contributes to workplace outcomes. We conclude with the observation that the issue of diversity in the workforce is inherently a political issue, and hence one where interests are often in conflict and sometimes contradictory. The challenge for managing diversity in the workforce is the ability to bridge such political differences, and so far, few organizations have met that goal.