This article examines recent changes in working-class collective actions. First it explains which were the main causes for the decline of traditional labor union militancy resulting from effects of economic stabilization, neoliberalization, and globalization on those key segments of labor movement that accounted for the backbone of union militancy as in the case of the automotive workers, bank workers, steelworkers, and civil servants of the Brazilian economy during the decade of the 1990s. Secondly, the article analyzes the emergence of alternative forms of worker contention among the urban informal sector and the rural workers through the landless workers movement, which also have been affected by the processes of neoliberalization and globalization, but unlike the workers in the formal sector, these continue to contend for worker entitlements and introduce new forms of worker organization different from the conventional union organizations upon which is based the Brazilian labor movement.o TEXTO COMPLETO DESTE ARTIGO, ESTARÁ DISPONÍVEL À PARTIR DE AGOSTO DE 2015.726389