A large decline in the efficiency of the U.S. labor market in matching unemployed workers and vacant jobs has been documented during the Great Recession. We use a simple New Keynesian model with search and matching frictions in the labor market to study the propagation of matching efficiency...

We investigate the effects of uncertainty shocks on unemployment dynamics in the post-WWII U.S. recessions via non-linear (Smooth-Transition) VARs. The relevance of uncertainty shocks is found to be much larger than that predicted by standard linear VARs in terms of (i) magnitude of the reaction...