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Using Kinked Budget Sets to Estimate Extensive Margin Responses: Method and Evidence from the Social Security Earnings Test

Damon Jones, Alexander Gelber (), Daniel W. Sacks () and Jae Song ()
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Daniel W. Sacks: Indiana University

No 2017-034, Working Papers from Human Capital and Economic Opportunity Working Group

Abstract: We develop a method for estimating the effect of a kinked budget set on workers' employment decisions, and we use it to estimate the impact of the Social Security Old-Age and Survivors Insurance (OASI) Annual Earnings Test (AET). The AET reduces OASI claimants' current OASI benefits in proportion to their earnings in excess of an exempt amount. Using a Regression Kink Design and Social Security Administration data, we document that the discontinuous change in the benefit reduction rate at the exempt amount causes a corresponding change in the employment rate. We develop conditions in a general setting under which we can use such patterns to estimate the elasticity of the employment rate with respect to the effective average net-of-tax rate. Our resulting elasticity point estimate for the AET is at least 0.49, suggesting that the AET reduces employment by more than one percentage point in the group we study.

Keywords: social security; elasticity of employment rate; Annual Earnings Test (search for similar items in EconPapers)
JEL-codes: H24 H31 H55 J14 J22 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-age, nep-pbe and nep-pub
Date: 2017-05
Note: MIP
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http://humcap.uchicago.edu/RePEc/hka/wpaper/Jones_ ... nked-budget-sets.pdf First version, April 2017 (application/pdf)

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