PROFIT MARGINS INQUIRY: Note on alternative hypotheses as to the determination of Profit Margins

This paper surveys the various accounts offered by Marxian economists for the ending of the long postwar boom. All focus on the decline in profitability, but they offer different expalanations. Three principal categories of crisis theory are distinguished: underconsumption; Marx's ‘Volume III’ falling rate of profit analysis; and several versions of overaccumulation theory, in particular the French regulation school and the North American discussion of the social structure of accumulation. A separate section deals with the relationship between the capitalist state and the crisis. Some general conclusions are drawn concerning the current nature of Marxian economic theory.