Marx's theory of waces : An heterodox criticism Michel De Vroey The aim of this article if, to question Marx's project of integrating the wage-relationship into general equilibrium. In a first part, I examine the theoretical status of the notion of labour power and argue that it should be considered as a particular natural ressource rather than a particular commodity, as it is usually assumed in the Marxian tradition. The second part of the article is devoted to the study of the impact of this definitional change. The question to be answered is the following : under which conditions is one allowed to conceive of an equilibrium wage ? It is argued that these conditions are definetely not satisfied in the fordist stage of development of the w...