52 Pages Posted: 8 Jul 2013 Last revised: 6 Nov 2015
Date Written: November 1, 2015
We show that a class of models of matching from firms' perspectives (that nest most standard search models) necessarily exhibit specific dynamic patterns of employment. Despite the prevalent use of models within this class, these patterns have not been noted before. Focusing on labor search as a leading example, in presence of search frictions, firms prefer to hire low productivity workers in high-demand states to take advantage of current profit opportunities. This implies that bad matches accumulate during expansions, leading to drops in employment, and other inputs, that are positively related to the length of the expansion when a negative shock eventually hits: the longer since the last contraction, the larger the absolute and percentage drop in the employment of labor and capital inputs.
We also show that this phenomenon is present in observed dynamics, using US micro-data. We find that five additional years of expansion lead to an additional drop of thirty percent in employment growth at the onset of a downturn.
Keywords: recessions, employment, unemployment, matching, search, business cycles, macro-dynamics
JEL Classification: E24, E32, D92, D21, D22
Suggested Citation: Suggested Citation
Jackson, Matthew O. and Tebaldi, Pietro, A Forest Fire Theory of the Duration of a Boom and the Size of a Subsequent Bust (November 1, 2015). Available at SSRN: https://ssrn.com/abstract=2263501 or http://dx.doi.org/10.2139/ssrn.2263501