“Labor is the living, form-giving fire,” Marx wrote. “It is the transitoriness of things, their temporality, as their transformation by living time.” How is it, then, that labor, with all its life-affirming potential, has become the means of capitalist discipline, exploitation, and domination in modern society? The authors expose and pursue this paradox through a systematic analysis of the role of labor in the processes of capitalist production and in the establishment of capitalist legal and social institutions. Critiquing liberal and socialist notions of labor and institutional reform from a radical democratic perspective, Hardt and Negri challenge the state-form itself.