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Heterogeneity in Labor Supply Elasticity and Optimal Taxation

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  • Marios Karabarbounis

    (University of Rochester)

Abstract
Standard public finance principles imply that workers with more elastic labor supply should face smaller tax distortions. This paper quantitatively tests the potential of such an idea within a realistically calibrated life cycle model of labor supply with heterogeneous agents and incomplete markets. Heterogeneity in labor supply elasticity arises endogenously from differences in reservation wages. I find that older cohorts are much more responsive to wage changes than younger and especially middle aged cohorts. Both a shorter time horizon and a larger stock of savings account for this difference. Since the government does not have direct information on individual labor supply elasticity it uses these life cycle variables as informative moments. The optimal Ramsey tax policy decreases the average and marginal tax rates for agents older than 50 and more so the larger is the accumulated stock of savings. At the same time, the policy increases significantly the tax rates for middle aged workers. Finally, the optimal policy provides redistribution by decreasing tax rates of wealth-poor young workers. The policy encourages work effort by high elasticity groups while targets inelastic middle aged groups to raise revenues. As a result, total supply of labor increases by 2.98% and total capital by 5.37%. These effects translate into welfare gains of about 0.85% of annual consumption.

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  • Marios Karabarbounis, 2012. "Heterogeneity in Labor Supply Elasticity and Optimal Taxation," 2012 Meeting Papers 655, Society for Economic Dynamics.
    • Handle: RePEc:red:sed012:655
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    2. European Commission, 2013. "Tax reforms in EU Member States - Tax policy challenges for economic growth and fiscal sustainability – 2013 Report," Taxation Papers 38, Directorate General Taxation and Customs Union, European Commission.
    3. Bagchi, Shantanu, 2015. "Labor supply and the optimality of Social Security," Journal of Economic Dynamics and Control, Elsevier, vol. 58(C), pages 167-185.
    4. Alpert, Abby & Powell, David, 2014. "Estimating Intensive and Extensive Tax Responsiveness: Do Older Workers Respond to Income Taxes?," Working Papers 987-1, RAND Corporation.
    5. Bagchi, Shantanu, 2019. "Differential mortality and the progressivity of social security," Journal of Public Economics, Elsevier, vol. 177(C), pages 1-1.
    6. Abby Alpert & David Powell, 2014. "Estimating Intensive and Extensive Tax Responsiveness Do Older Workers Respond to Income Taxes?," Working Papers WR-987-1, RAND Corporation.
    7. Jean‐Baptiste Michau, 2021. "On the Provision of Insurance against Search‐Induced Wage Fluctuations," Scandinavian Journal of Economics, Wiley Blackwell, vol. 123(1), pages 382-414, January.
    8. William Peterman, 2016. "The effect of endogenous human capital accumulation on optimal taxation," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 21, pages 46-71, July.
    9. Alexander Ludwig & Dirk Krueger, 2015. "Optimal Capital and Progressive Labor Income Taxation with Endogenous Schooling Decisions and Intergenerational Transfers," 2015 Meeting Papers 334, Society for Economic Dynamics.
    10. Shantanu Bagchi, 2024. "Means testing and Social Security in the United States," International Studies of Economics, John Wiley & Sons, vol. 19(1), pages 68-91, March.
    11. Krueger, Dirk & Ludwig, Alexander, 2013. "On the Optimal Provision of Social Insurance," MEA discussion paper series 201302, Munich Center for the Economics of Aging (MEA) at the Max Planck Institute for Social Law and Social Policy.
    12. Krueger, Dirk & Ludwig, Alexander, 2016. "On the optimal provision of social insurance: Progressive taxation versus education subsidies in general equilibrium," Journal of Monetary Economics, Elsevier, vol. 77(C), pages 72-98.
    13. Blandin, Adam & Peterman, William B., 2019. "Taxing capital? The importance of how human capital is accumulated," European Economic Review, Elsevier, vol. 119(C), pages 482-508.
    14. Alexander Ludwig & Dirk Krueger, 2010. "Optimal Progressive Taxation and Education Subsidies in a Model of Endogenous Human Capital Formation," 2010 Meeting Papers 388, Society for Economic Dynamics.
    15. Shantanu Bagchi, 2023. "Means Testing and Social Security in the U.S," Working Papers 2023-01, Towson University, Department of Economics, revised Mar 2023.
    16. Abuselidze, George, 2020. "Optimality of tax policy on the basis of comparative analysis of income taxation," MPRA Paper 104591, University Library of Munich, Germany.
    17. Abuselidze, George, 2015. "Formation of Tax Policy in the Aspect of the Optimal Tax Burden," MPRA Paper 86277, University Library of Munich, Germany, revised 02 Jun 2015.
    18. George Abuselidze, 2013. "Optimal Tax Policy - Financial Crisis Overcoming Factor," Asian Economic and Financial Review, Asian Economic and Social Society, vol. 3(11), pages 1451-1459, November.

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