Inequality, financialization, and economic decline

The objective of this article is to argue that the labor productivity slowdown experienced in recent years by several advanced countries can be explained, following a Kaldorian-Classical approach, by a weak gross domestic product (GDP) performance and by a decline in the wage share. Moreover, drawing inspiration from recent post Keynesian literature, the authors identify the ongoing worsening in income equality and the increase in the degree of financialization as other major explanatory factors of sluggish productivity. The article will provide a brief literature review concerning nonmainstream attempts to endogenize labor productivity, beginning from the famous Verdoorn-Kaldor law (Verdoorn, 1949) and the Kaldor technical progress function (Kaldor, 1961) and including Sylos Labini's productivity equation (Sylos Labini, 1984, 1999). The authors will then discuss how labor flexibility and shareholder value orientation, one of the main aspects of financialization, can negatively affect equality and labor productivity. Finally, they propose an extended version of the Sylos Labini's equation, where productivity growth is claimed to depend positively on GDP rate of growth and the wage share, and negatively on income inequality and financialization. They submit to empirical scrutiny their extended productivity equation; the results of their estimations provide support to their theoretical argument.