How do changing class relations contribute to processes of capitalist development? Within development studies the importance of class relations is usually relegated to lesser status than the roles of states and markets in generating and allocating resources. This book argues that the changing class relations are central to different patterns of capitalist development and that processes and outcomes of class struggle co-determine the form that development takes. Workers, state and development in Brazil illuminates these claims through a detailed empirical investigation of class dynamics and capitalist development in North East Brazil's São Francisco valley. It details how workers in the valley's export grape sector have won significant concessions from employers, contributing to a progressive pattern of regional capitalist development. The book will appeal to students and researchers interested in processes of capitalist development, agrarian political economy and international political economy.