The Ins and Outs of Cyclical Unemployment
School of Economics, University of Edinburgh
University of Michigan at Ann Arbor - Department of Economics
Michigan State University; National Bureau of Economic Research (NBER)
NBER Working Paper No. w12853
One of the strongest trends in recent macroeconomic modeling of labor market fluctuations is to treat unemployment inflows as acyclical. This trend stems in large part from an influential paper by Shimer on "Reassessing the Ins and Outs of Unemployment," i.e., the extent to which increased unemployment during a recession arises from an increase in the number of unemployment spells versus an increase in their duration. After broadly reviewing the previous literature, we replicate and extend Shimer's main analysis. Like Shimer, we find an important role for increased duration. But contrary to Shimer's conclusions, we find that even his own methods and data, when viewed in an appropriate metric, reveal an important role for increased inflows to unemployment as well. This finding is further strengthened by our refinements of Shimer's methods of correcting for data problems and by our detailed examination of particular components of the inflow to unemployment. We conclude that a complete understanding of cyclical unemployment requires an explanation of countercyclical inflow rates as well as procyclical outflow rates.
Number of Pages in PDF File: 48working papers series
Date posted: January 24, 2007
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