This book investigates the formation and development of Brazil's industrial working class in São Paulo between 1900 and 1955. Joel Wolfe examines the complex interplay of economic, social, and political factors that shaped the lives and consciousness of both male and female laborers during this pivotal period of industrialization. The work draws on extensive archival research to present a nuanced account of the challenges and triumphs of this burgeoning workforce.

This historical study is recognized for its detailed examination of labor in a key period of Brazilian industrialization. It is noted for its focus on the specific context of São Paulo and its nuanced portrayal of the experiences of both men and women within the working class. The book's reliance on archival sources suggests a rigorous and in-depth approach to understanding the formation of this significant social group.