Job Polarization and the Flattening of the Price Phillips Curve

This paper shows that the change in the occupational composition of the labor market in favour of non-routine jobs -i.e. job polarization- flattens the price Phillips Curve (PC). Using data from the European Monetary Union and exploiting the fact that job polarization accelerates during recessions, we obtain two results. First, countries experiencing a bigger shift in the occupational structure during a downturn exhibit a flatter PC afterward. Second, the occupational shifts experienced during the Great Recession and the Sovereign Debt Crisis explain up to a forth of the flattening of the curve in the 2002-2018 period. We reconcile this evidence through a New Keynesian model with unemployment and search and matching frictions. Heterogeneity in the fluidity across segments of the labor market -i.e. differences in the separation and hiring rate across jobs- is the source of PC flattening.