This book includes contributions from a variety of different perspectives on employee turnover. We categorize these myriad papers in terms of history, scope, theory development, and population generalization. Part I thus begins with an article by James Price, a pioneering thinker in the turnover field. Initiating the most systematic turnover research ever undertaken, Dr. Price describes his persistent quest to develop and refine a comprehensive theory of turnover. His 30-year intellectual journey offers valuable insight into theoretical and methodological challenges that continue to confront all turnover researchers.