Uncertainty Business Cycles - Really?
Are fluctuations in firms' profitability risk a major cause of regular business cycles? We study this question within the framework of a heterogeneous-firm dynamic stochastic general equilibrium model with fixed capital adjustment costs. In such a model, surprise increases of risk lead to a wait-and-see policy for investment at the firm level and a decrease in aggregate economic activity. We calibrate the model using German firm-level data with a broader sectoral, size and ownership coverage than comparable U.S. data sets. The use of these data enables us to provide robust lower and upper bound estimates for the size of firm-level risk fluctuations. We find that time-varying firm-level risk on its own is unlikely to be a major quantitative source of regular business cycle fluctuations. When we augment a model with only aggregate productivity shocks by time-varying risk, the risk shocks dampen the high contemporaneous correlations of the productivity-shock-only model, but do not alter the other unconditional business cycle properties.
|Date of creation:||Mar 2011|
|Publication status:||published as “Wait-and-See Business Cycles?”, joint with C. Bayer (University of Bonn), Journal of Monetary Economics (2013), Vol. 60(6), 704-719. Formerly circulating as “Uncertainty Business Cycles – Really?”, NBER WP 16862, and CESIFO-WP 2844 “Firm-Specific Productivity Risk over the Business Cycle: Facts and Aggregate Implications”.|
|Contact details of provider:|| Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.|
Web page: http://www.nber.org
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