Hie Joo Ahn and Yunjong EoThis paper empirically investigates sources of hysteresis, focusing on downward nominal wage rigidity and the gender gap in the labor market, using U.S. state-level payroll employment data. Employing a Bayesian Markov-switching model of business cycles, we identify U-shaped and L-shaped recessions, which correspond to quick recoveries and hysteresis, respectively. Both U-shaped and L-shaped recessions are driven by supply and demand shocks; however, U-shaped recessions are associated with recessionary shocks that raise labor productivity, whereas L-shaped recessions are also driven by shocks that reduce labor productivity. Following L-shaped recessions, recoveries in employment, output, and labor productivity are sluggish and accompanied by declining inflation. In contrast, U-shaped recoveries feature stronger rebounds without significant changes in inflation. Greater downward nominal wage rigidity and a larger gender employment gap both increase the likelihood of L-shaped recessions and hysteresis. Downward nominal wage rigidity enhances the effectiveness of both expansionary monetary and tax policies. While expansionary monetary policy becomes more effective with a larger gender gap, the effectiveness of tax cuts remains unaffected.
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