Pasinetti, Keynes and the multiplier

Abstract

This paper explores the relationship between the Keynesian multiplier and Pasinetti's model of pure production. Key assumptions of Pasinetti's model are its multisectoral structure, the definition of all income as a reward to labouring activities and, as a consequence, the operation of a pure labour theory of value. A translation between these models is effected by introducing investment as an exogenous determinant. By drawing from Keynes to apply his concept of the wage unit, it is possible to aggregate from Pasinetti's multisectoral model to a genuinely macroeconomic multiplier. This provides a way of using the scalar Keynesian multiplier without making the restrictive one-commodity assumption. In addition, this formal demonstration enhances our understanding of the relationship between the wage unit and the labour theory of value. Finally, critics have argued that Pasinetti downgrades the importance of institutional analysis; in contrast, the derivation of a scalar Keynesian multiplier contributes to an understanding of how relevant Pasinetti's approach is to the analysis of a monetary production economy.

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