This book reports results of a study of the efects of quality of worklife programs and related forms of worker participation on unions and the collective bargaining process. Chapter 1 describes the evolution of worker participation in unionized settings and summarizes basic propositions in models of joint union-management change. In chapter 2 five case studies illustrate the dynamics of worker participation processes. Chapter 3 reviews the experiences of two major national unions and their industries--the United Steel Workers and seven major steel companies and the United Automobile Workers and General Motors and Ford Motor Company--with worker participation processes scattered across multiple plants. Each case illustrates the challenges involved in linking workplace participation programs to the broader, more centralized collective bargaining structure and the broader strategies of the union and employers involved. Chapters 4 and 5 analyze through survey and interview data the views that rank and file members and local labor leaders hold toward worker participation. Chapter 6 draws on data from interviews, speeches, other public documents, and selected internal union documents to present the views of key national labor movement leaders on worker participation. Chapter 7 highlights implications for the labor movement and the U.S. industrial relations system. (YLB)