The paper examines that imperfections in financial markets are themselves a source of macroeconomic fluctuations. Small, temporary shocks to technology or income distribution can generate large fluctuations in output and asset prices and spill over to other sectors. The work is based on the...

The argument that policy risk, i.e. uncertainty about monetary and fiscal policy, has been holding back the economic recovery in the U.S. during the Great Recession has a large popular appeal. We analyze the role of policy risk in explaining business cycle fluctuations by using an estimated New...

We develop a theoretical model with labor market frictions, incomplete financial markets and with households which have two members. Households face unemployment risks but their members adjust their labor supplies to insure against unemployment. We use the model to explain the cyclical...

This paper adds two-sided ex-ante heterogeneity and a production technology inducingsorting to the canonical Diamond-Mortensen-Pissarides (DMP) search and matchingmodel. Ex-ante heterogeneity and sorting have important implications for the dynamicproperties of the model. The modifications solve...

We develop an equilibrium model of on-the-job search with ex-ante heterogeneous workers and firms, aggregate uncertainty and vacancy creation. The model produces rich dynamics in which the distributions of unemployed workers, vacancies and worker-firm matches evolve stochastically over time. We...

This paper builds on the work of Acemoglu et al. (2012) and considers a production network with unobserved common technological factor and establishes general conditions under which the network structure contributes to aggregate fluctuations. It introduces the notions of strongly and weakly...

We study the relationship between cyclical job and worker flows at the establishment level using the new German AWFP dataset spanning from 1975-2014. We find that worker turnover moves more procyclical than job turnover. This procyclical worker churn takes place along the entire employment...

We introduce a novel measure of uncertainty that is based on a business survey in which firms are asked directly how certain or uncertain they are. So far the literature has tried to capture economic uncertainty indirectly by means of expectation errors or the extent of disagreement. Our direct...

We develop a quantitative business cycle model with search complementarities in the inter-firm matching process that entails a multiplicity of equilibria. An active equilibrium with strong joint venture formation, large output, and low unemployment coexists with a passive equilibrium with low...

This paper constructs a dynamic stochastic general equilibrium model in which labor reallocations between production and organizational tasks generate endogenous TFP movements and also amplify and propagate the effects of exogenous shocks on macroeconomic activity. Organizational tasks in our...