In Co-operative Struggles, Denise Kasparian expands the theoretical horizons regarding labour unrest by proposing new categories to make visible and conceptualize conflicts in the new worker co-operativism of the twenty-first century.After the depletion of neoliberal reforms at the dawn of the twenty-first century in Argentina, co-operativism gained momentum, mainly due to the recuperation of enterprises by their workers and state promotion of co-operatives through social policies. These new co-operatives became actors not just in production but in social struggle. Their peculiarity lies in the fact that they shape a socio-productive form not structured by wage relations: workers are at the same time owners of the firms. Why, how, and by what cleavages and groupings do these co-operative workers without bosses come into conflict?