As the first and largest guestworker program, the U.S.–Mexico Bracero Program (1942–1964) codified the unequal relations of labor migration between the two nations. This book interrogates the articulations of race and class in the making of the Bracero Program by introducing new syntheses of sociological theories and methods to center the experiences and recollections of former Braceros and their families.

"Invisible Workers gives voice to the Braceros, whose perspectives have been largely absent from official accounts.... Mize’s writing sheds light on the institutional racism that was woven into the Bracero program’s structure, but also into interpersonal relationships.... Mize gives historical context to a longstanding bipolar relationship in which the United States entices documented and undocumented labor to cross the border to do dangerous, backbreaking, dirty, low-paying jobs and then turns on the Mexicans, making them the face of the law-breakers who must be deported for not standing in line to enter and stay legally.... The author deserves high praise for opening eyes to a program in which the United States asked Mexico to send field workers for almost 25 years." - Contemporary Sociology