Review of Economic Dynamics最新文献

Do recessions speed up or impede productivity-enhancing reallocation? To investigate this question, we use U.S. linked employer-employee data to examine how worker flows contribute to productivity growth over the business cycle. We find that in expansions high-productivity firms grow faster primarily by hiring workers away from low-productivity firms. Productivity growth slows during recessions when this job ladder collapses. In contrast, layoffs at low-productivity firms disproportionately increase in recessions, which leads to an increase in productivity growth. We thus find evidence of both sullying and cleansing effects of recessions, but the timing of these effects differs. The cleansing effects are concentrated in downturns while the sullying effects linger well into the economic recovery. Our results imply that slow labor market recoveries will be more damaging to productivity growth than V-shaped recoveries due to lingering sullying effects.

This paper reevaluates the common characterization of commodity-exporting developing economies as having excessively procyclical fiscal policy. We develop a new measure of fiscal procyclicality—the marginal propensity to spend (MPS) an extra dollar of commodity revenues—which we estimate in a panel of countries and compare with optimal policy in a New Keynesian model. Empirically, fiscal policy is procyclical on average (MPS=0.25), but heterogeneous. Countries with fixed exchange rates (ER) are almost acyclical, but countries with flexible ERs are procyclical and the MPS increases with the persistence of commodity price shocks. Optimal policy in the model is similar qualitatively but differs quantitatively in some dimensions. Under fixed ERs, optimal policy is almost acyclical to stabilize the business cycle. However, under flexible ERs, monetary policy stabilizes the business cycle, so fiscal policy is procyclical because commodity price shocks are typically persistent and so should be spent by the permanent income hypothesis.

We show that the degree of risk-sharing among heterogeneous workers is a key determinant of monetary non-neutrality in a multisector sticky-price model. In this framework, workers are employed across different sectors, earning distinct wages. The limited ability of workers to fully insure against labor income risks results in strategic complementarity in firms' price-setting decisions with respect to aggregate shocks and strategic substitutability with respect to idiosyncratic shocks. These pricing interactions lead to sluggish adjustments of the price level in response to monetary and other aggregate shocks, causing significant fluctuations in the output gap while maintaining large responses of individual prices to idiosyncratic shocks. We illustrate these results across three stylized asset market scenarios: complete markets, non-contingent bond-only markets, and financial autarky.

The conditions that ensure the existence of a unique stable equilibrium — determinacy conditions — for rational expectations models with Markov switching depend on the stability concept, contrasting with standard linear rational expectations models. In this paper, we offer a unified framework for the two commonly used stability concepts: boundedness and mean-square stability. We derive determinacy conditions for both concepts based on simple metrics. Qualitatively, we show that mean-square stable solutions are always at least as many as bounded solutions. We then apply and discuss our results in two monetary models.