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Working Paper
Endogenous Borrowing Constraints and Stagnation in Latin America
The Latin American debt crisis of the 1980's had a major and long lasting effect on per-capita consumption: its level in 2005 was not that different from that in 1980. This paper studies the long stagnation in per-capita consumption that followed the crisis, and its relationship with recessions and sovereign risk, using a small open economy real business cycle model with complete markets, endogenous borrowing limits (limited commitment), endogenous capital accumulation, and domestic productivity and international interest rate shocks. I find that the model does an excellent job at explaining ...
Working Paper
Financial Frictions, the Housing Market, and Unemployment
We develop a two-sector search-matching model of the labor market with imperfect mobility of workers, augmented to incorporate a housing market and a frictional goods market. Homeowners use home equity as collateral to finance idiosyncratic consumption opportunities. A financial innovation that raises the acceptability of homes as collateral raises house prices and reduces unemployment. It also triggers a reallocation of workers, with the direction of the change depending on firms? market power in the goods market. A calibrated version of the model under adaptive learning can account for ...
Report
Fiscal Policy in Debt Constrained Economies
We study optimal fiscal policy in a small open economy (SOE) with sovereign and private default risk and limited commitment to tax plans. The SOE's government uses linear taxation to fund exogenous expenditures and uses public debt to inter-temporally allocate tax distortions. We characterize a class of environments in which the tax on labor goes to zero in the long run, while the tax on capital income may be non-zero, reversing the standard prediction of the Ramsey tax literature. The zero labor tax is an optimal long run outcome if the economy is subject to sovereign debt constraints and ...
Working Paper
Debt Limits and Credit Bubbles in General Equilibrium
We provide a novel characterization of self-enforcing debt limits in a general equilibrium framework of risk sharing with limited commitment, where defaulters are subject to recourse (a fractional loss of current and future endowments) and exclusion from future credit. We show that debt limits are exactly equal to the present value of recourse plus a credit bubble component. We provide applications to models of sovereign debt, private collateralized debt, and domestic public debt. Implications include an original equivalence mapping among distinct institutional arrangements, thereby ...
Working Paper
Domestic Policies and Sovereign Default
A model with two essential elements, sovereign default and distortionary fiscal and monetary policies, explains the interaction between sovereign debt, default risk and inflation in emerging countries. We derive conditions under which monetary policy is actively used to support fiscal policy and characterize the intertemporal tradeoffs that determine the choice of debt. We show that in response to adverse shocks to the terms of trade or productivity, governments reduce debt and deficits, and increase inflation and currency depreciation rates, matching the patterns observed in the data for ...
Working Paper
Transparency and Collateral : Central versus Bilateral Clearing
Bilateral financial contracts typically require an assessment of counterparty risk. Central clearing of these financial contracts allows market participants to mutualize their counterparty risk, but this insurance may weaken incentives to acquire and to reveal information about such risk. When considering this trade-off, participants would choose central clearing if information acquisition is incentive compatible. If it is not, they may prefer bilateral clearing, when this choice prevents strategic default while economizing on costly collateral. In either case, participants independently ...
Working Paper
Domestic Policies and Sovereign Default
A model with two essential elements, sovereign default and distortionary fiscal and monetary policies, explains the interaction between sovereign debt, default risk and inflation in emerging countries. We derive conditions under which monetary policy is actively used to support fiscal policy and characterize the intertemporal tradeoffs that determine the choice of debt. We show that in response to adverse shocks to the terms of trade or productivity, governments reduce debt and deficits, and increase inflation and currency depreciation rates, matching the patterns observed in the data for ...
Working Paper
Marriage, Labor Supply, and the Dynamics of the Social Safety Net
The 1996 U.S. welfare reform introduced time limits on welfare receipt. We use quasi-experimental evidence and a rich life cycle model to understand the impact of time limits on different margins of behavior and well-being. We stress the impact of marital status and marital transitions on mitigating the cost and impact of time limits. Time limits cause women to defer claiming in anticipation of future needs and to work more, effects that depend on the probabilities of marriage and divorce. They also cause an increase in employment among single mothers and reduce divorce, but their ...
Report
Asset Pricing with Endogenously Uninsurable Tail Risk
This paper studies asset pricing in a setting in which idiosyncratic risk in human capital is not fully insurable. Firms use long-term contracts to provide insurance to workers, but neither side can commit to these contracts; furthermore, worker-firm relationships have endogenous durations owing to costly and unobservable effort. Uninsured tail risk in labor earnings arises as a part of an optimal risk-sharing scheme. In the general equilibrium, exposure to the resulting tail risk generates higher risk premia, more volatile returns, and variations in expected returns across firms. Model ...
Working Paper
Markov-Perfect Risk Sharing, Moral Hazard and Limited Commitment
We define, characterize and compute Markov-perfect risk-sharing contracts in a dynamic stochastic economy with endogenous asset accumulation and simultaneous limited commitment and moral hazard frictions. We prove that Markov-perfect insurance contracts preserve standard properties of optimal insurance with private information and are not more restrictive than a long-term contract with one-sided commitment. Markov-perfect contracts imply a determinate asset time-path and a non-degenerate long-run stationary wealth distribution. We show numerically that Markov-perfect contracts provide sizably ...