Kaldor-Verdoorn’s law and increasing returns to scale: a comparison across developed countries

The object of this study is to investigate the validity of the Kaldor-Verdoorn’s Law in explaining the long run determinants of the labor productivity growth for the manufacturing sector of some developed economies (Western European Countries, Australia, Canada, Japan and United States). We consider the period 1973-2006 using data provided by the European Commission - Economics and Financial Affairs. Our findings suggest that the law is valid for the manufacturing of Italy, US, Belgium and Australia. Capital growth and labor cost growth do not appear relevant in explaining productivity growth. The estimated Verdoorn coefficients are found to be stable throughout the period.