labor market frictions. We characterize the distributions of employment, unemployment, wages and income within and between … sectors as a function of structural parameters. We find that greater firm heterogeneity increases unemployment, wage … frictions have non-monotonic effects on aggregate unemployment and inequality through within- and between-sector components …

"Shimer's calibrated version of the Mortensen-Pissarides model generates unemployment fluctuates much smaller than the … has been challenged by Costain and Reiter, who say it generates unrealistically big differences in unemployment from the …