Income levels are higher in cities. The evidence for the income gap between urban and rural areas is overwhelming, but the agglomeration effect is hard to identify. Recent advances make use of individual level data to separate out sorting and instrumentation to handle the endogeneity of...

The empirical evidence on the incidence of payroll taxation is primarily based on the wage bill of firms. This paper applies matched employer-employee register data on individual wages for all private sector workers in Norway. Exploiting a payroll tax reform and using the...