Perez's research focuses on civic engagement among marginalized populations in Latin America and the United States. Overarching themes in Perez's writing include political sociology, social movements, urban sociology, social inequality, and qualitative methods.
Draws on both broad sociological literature and ethnographic research on the unemployed worker's movement in Argentina. Argues that an essential attraction of participating in this movement is the opportunity to engage in the daily practices associated with a respectable proletarian ethos. Suggests that research on the relation between practices and activism can significantly complement the current literature and deepen our knowledge of social movement participation.