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The Marginal Labor Supply Disincentives of Welfare: Evidence from Administrative Barriers to Participation

Robert Moffitt () and Matthew V. Zahn ()
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Matthew V. Zahn: Johns Hopkins University

No 15046, IZA Discussion Papers from Institute of Labor Economics (IZA)

Abstract: Existing research on the static effects of the manipulation of welfare program benefit parameters on labor supply has allowed only restrictive forms of heterogeneity in preferences. Yet preference heterogeneity implies that the marginal effects on labor supply of welfare expansions and contractions may differ in different time periods with different populations and which sweep out different portions of the distribution of preferences. A new examination of the heavily studied AFDC program uses variation in state-level administrative barriers to entering the program in the late 1980s and early 1990s to estimate the marginal labor supply effects of changes in program participation induced by that variation. The estimates are obtained from a theory-consistent reduced form model which allows for a nonparametric specification of how changes in welfare program participation affect labor supply on the margin. Estimates using a form of local instrumental variables show that the marginal treatment effects are quadratic, rising and then falling as participation rates rise (i.e., becoming more negative then less negative on hours of work). The average work disincentive is not large but that masks some margins where effects are close to zero and some which are sizable. Traditional IV which estimates a weighted average of marginal effects gives a misleading picture of marginal responses. A counterfactual exercise which applies the estimates to three historical reform periods in 1967, 1981, and 1996 when the program tax rate was significantly altered shows that marginal labor supply responses differed in each period because of differences in the level of participation in the period and the composition of who was on the program.

Keywords: welfare; labor supply; marginal treatment effects (search for similar items in EconPapers)
JEL-codes: C21 I3 J2 (search for similar items in EconPapers)
Pages: 78 pages
Date: 2022-01
New Economics Papers: this item is included in nep-his, nep-lma and nep-ltv
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Related works:
Working Paper: The Marginal Labor Supply Disincentives of Welfare: Evidence from Administrative Barriers to Participation (2022) Downloads
Working Paper: The Marginal Labor Supply Disincentives of Welfare: Evidence from Administrative Barriers to Participation (2022) Downloads
Working Paper: The Marginal Labor Supply Disincentives of Welfare: Evidence from Administrative Barriers to Participation (2019) Downloads
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