The Swedish employer paid payroll tax was reduced substantially for young workers in 2007, causing firms' average social fees to depend on the age structure of their employees. Using pre-reform conditions to define treated and control firms, we show that the lower costs induced by the reduced...

Over the 1967-2015 period, net wage inequality has decreased in France by 25%, in contrast to the significant increase experienced by most developed countries. Less well known is the fact that labor cost inequality has actually increased by 8% over the same period. We show that, (a) standard...