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| Özlem Onaran |
A simultaneous increase in the profit share by 1%-point in the major developed and developing countries, leads to a 0.36% decline in global GDP
The dramatic decline in the share of wages in GDP in both the developed and developing world during the neoliberal era of the post-1980s has accompanied lower growth rates at the global level as well as in many countries. Mainstream economics continue to guide policy towards further wage moderation along with austerity as one of the major responses to the Great Recession. In our recent report for the International Labour Office (Onaran and Galanis, 2012), we show the vicious cycle generated by this race to the bottom. The main caveat of this wisdom is to treat wages as a cost item. However, wages have a dual role affecting not just costs but also demand. We work with a post-Keynesian/post-Kaleckian model, which allows this dual role.
A fall in the wage share has both negative and positive effects
We estimate the effect of a change in income distribution on aggregate demand (i.e. on consumption, investment, and net exports) in the G20 countries. Consumption is a function of wage and profit income, and is expected to decrease when the wage share decreases. Investment is estimated as a function of the profit share as well as demand, and a higher profitability is expected to stimulate investment for a given level of aggregate demand. Finally, exports and imports are estimated as functions of relative prices, which in turn are functions of nominal unit labour costs, closely related to the wage share. The total effect of the decrease in the wage share on aggregate demand depends on the relative size of the reactions of consumption, investment and net exports. If the total effect is negative, the demand regime is called wage-led; otherwise the regime is profit-led. Mainstream economic policy assumes that economies are always profit-led, whereas in the post-Keynesian models the relationship between the wage share and demand is an empirical matter, and depends on the structural characteristics of the economy.
