Affiliation:
1. University of Massachusetts, Amherts
Abstract
Abstract
The Kaldor-Verdoorn law refers to a positive but less than one-for-one causal relationship between the growth rates of output and labour productivity. While empirical research has found that the Kaldor-Verdoorn coefficient lies between 0 and 1, the interpretation of this finding remains unclear. In this paper, we present a model to derive the Kaldor-Verdoorn law. Our results show that the Kaldor-Verdoorn coefficient is jointly determined by the elasticity of factor substitution, labour supply elasticity, the profit share and the increasing returns to scale (or demand-induced technical change) parameter. Hence, estimated Kaldor-Verdoorn coefficients cannot be used, on their own, to infer the presence of aggregate increasing returns to scale—with the exception of the benchmark case of Leontief Production technology (and steady-state analysis coupled with the assumption of Cobb-Douglas production technology). We also report a surprising result: an economy without aggregate increasing returns to scale (or without any demand-induced technical progress) can generate a Kaldor-Verdoorn coefficient that lies between 0 and 1.
Publisher
Oxford University Press (OUP)
Subject
Economics and Econometrics
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