Jennifer Hunt, Ryan Nunn, 17 October 2019

Over the last five decades, middle-wage jobs diminished in the US as wage inequality increased. This column investigates the relationship between these two phenomena, and finds no evidence that either computerisation or automation (often cited as a source of both trends) produced employment polarisation or increased wage inequality. By examining wages at the individual level (rather than occupation-average wages), the column suggests that the evolution of wages can be better explained by distinct causes—ranging from changing labour market institutions to globalisation—than by observable demographic factors. 

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