Gene Grossman, Elhanan Helpman, Ezra Oberfield, Thomas Sampson, 11 November 2017

Many countries have experienced both a slowdown in aggregate productivity growth and a decline in labour’s share of national income in recent years. This column argues that the productivity slowdown may have caused the decline in labour’s income. Calibrating the authors’ model to US data suggests that a one percentage point decline in the productivity growth rate accounts for between half and all of the observed decline in the US labour share.

Kirill Shakhnov, 17 January 2015

The rapid growth of the US financial sector has driven policy debate on whether it is socially desirable. This column examines the trade-off between finance and entrepreneurship, and links the growth of finance to rising wealth inequality. Although financial intermediation helps allocate capital efficiently, people choosing a career in finance do not internalise the negative effect on the pool of talented entrepreneurs. This mechanism can explain the simultaneous growth of wealth inequality and finance in the US, and why more unequal countries have larger financial sectors.