Unemloyment and Unobserved Credit Risk in the FHA Single Family Mortgage Insurance Fund
Empirical models of mortgage default typically find that the influence of unemployment is negligible compared to other well known risk factors such as high borrower leverage or low borrower FICO scores. This is at odds with theory, which assigns a critical role to unemployment status in the decision to stop payment on a mortgage. We help reconcile this divergence by employing a novel empirical strategy involving simulated unemployment histories to measure the severity of attenuation bias in loan-level estimations of default risk due to a borrower becoming unemployed. Attenuation bias results because individual data on unemployment status is unobserved, requiring that a market-wide unemployment rate be used as a proxy. Attenuation is extreme, with our results suggesting that the use of an aggregate unemployment rate in lieu of actual borrower unemployment status results in default risk from a borrower becoming unemployed being underestimated by a factor of 100 or more. Correcting for this indicates unemployment is more powerful than other well-known factors such as extremely high leverage or extremely low FICO scores in predicting individual borrower default. Our simulated data indicate that adding the unemployment rate as a proxy for the missing borrower-specific unemployment indicator does not improve the accuracy of the estimated model over the specification without the proxy variable included.
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- Andrew Caplin & Anna Cororaton & Joseph Tracy, 2012. "Is the FHA Creating Sustainable Homeownership?," NBER Working Papers 18190, National Bureau of Economic Research, Inc.
- Diego Aragon & Andrew Caplin & Sumit Chopra & John V. Leahy & Yann LeCun & Marco Scoffier & Joseph Tracy, 2010. "Reassessing FHA Risk," NBER Working Papers 15802, National Bureau of Economic Research, Inc.
- Kau James B. & Keenan Donald C. & Kim Taewon, 1994. "Default Probabilities for Mortgages," Journal of Urban Economics, Elsevier, vol. 35(3), pages 278-296, May.
- Deng, Yongheng & Quigley, John M. & Van Order, Robert, 1999.
"Mortgage Terminations, Heterogeneity, and the Exercise of Mortgage Options,"
Berkeley Program on Housing and Urban Policy, Working Paper Series
qt96r560pg, Berkeley Program on Housing and Urban Policy.
- Yongheng Deng & John M. Quigley & Robert Van Order, 2000. "Mortgage Terminations, Heterogeneity and the Exercise of Mortgage Options," Econometrica, Econometric Society, vol. 68(2), pages 275-308, March.
- Yongheng Deng & John M. Quigley & Robert Van Order, . "Mortgage Terminations, Heterogeneity and the Exercise of Mortgage Options," Zell/Lurie Center Working Papers 322, Wharton School Samuel Zell and Robert Lurie Real Estate Center, University of Pennsylvania.
- Ferreira, Fernando & Gyourko, Joseph & Tracy, Joseph, 2010.
"Housing busts and household mobility,"
Journal of Urban Economics,
Elsevier, vol. 68(1), pages 34-45, July.
- Fernando Ferreira & Joseph Gyourko & Joseph Tracy, 2008. "Housing Busts and Household Mobility," NBER Working Papers 14310, National Bureau of Economic Research, Inc.
- Fernando Ferreira & Joseph Gyourko & Joseph Tracy, 2008. "Housing busts and household mobility," Staff Reports 350, Federal Reserve Bank of New York.
- Fernando Ferreira & Joseph Gyourko & Joseph Tracy, 2011.
"Housing busts and household mobility: an update,"
526, Federal Reserve Bank of New York.
- Moulton, Brent R, 1990. "An Illustration of a Pitfall in Estimating the Effects of Aggregate Variables on Micro Unit," The Review of Economics and Statistics, MIT Press, vol. 72(2), pages 334-38, May.
- Caplin, Andrew & Freeman, Charles & Tracy, Joseph, 1997. "Collateral Damage: Refinancing Constraints and Regional Recessions," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 29(4), pages 496-516, November.
- Foote, Christopher L. & Gerardi, Kristopher & Willen, Paul S., 2008.
"Negative equity and foreclosure: Theory and evidence,"
Journal of Urban Economics,
Elsevier, vol. 64(2), pages 234-245, September.
- Christopher L. Foote & Kristopher Gerardi & Paul S. Willen, 2008. "Negative equity and foreclosure: theory and evidence," Public Policy Discussion Paper 08-3, Federal Reserve Bank of Boston.
- Andra C. Ghent & Marianna Kudlyak, 2010. "Recourse and residential mortgage default: theory and evidence from U.S. states," Working Paper 09-10, Federal Reserve Bank of Richmond.
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