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Social comparisons in oligopsony

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  • Goerke, Laszlo
  • Neugart, Michael

Abstract

A large body of evidence suggests that social comparisons matter for workers’ valuation of the wage they receive. The consequences of social comparisons in imperfectly competitive labor markets are less well understood. We analyze an oligopsonistic model of the labor market where workers derive (dis-)utility from comparing their own wage with wages paid at other firms. As social comparisons become more prevalent all workers are paid higher wages, the wage distribution becomes more equal, and employment shifts to high productivity firms. Moreover, the total wage bill and output increase, while aggregate profits decline. Overall welfare rises. Our theoretical results have implications for estimating the elasticity of the labor supply curve facing a firm.

Suggested Citation

  • Goerke, Laszlo & Neugart, Michael, 2017. "Social comparisons in oligopsony," Journal of Economic Behavior & Organization, Elsevier, vol. 141(C), pages 196-209.
  • Handle: RePEc:eee:jeborg:v:141:y:2017:i:c:p:196-209
    DOI: 10.1016/j.jebo.2017.07.002
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    as
    1. Emily Breza & Supreet Kaur & Yogita Shamdasani, 2018. "The Morale Effects of Pay Inequality," The Quarterly Journal of Economics, Oxford University Press, vol. 133(2), pages 611-663.
    2. Neumark, David & Postlewaite, Andrew, 1998. "Relative income concerns and the rise in married women's employment," Journal of Public Economics, Elsevier, vol. 70(1), pages 157-183, October.
    3. Adrian Chadi & Matthias Krapf, 2017. "The Protestant Fiscal Ethic: Religious Confession And Euro Skepticism In Germany," Economic Inquiry, Western Economic Association International, vol. 55(4), pages 1813-1832, October.
    4. George A. Akerlof & Janet L. Yellen, 1990. "The Fair Wage-Effort Hypothesis and Unemployment," The Quarterly Journal of Economics, Oxford University Press, vol. 105(2), pages 255-283.
    5. Tim Friehe & Mario Mechtel, 2017. "Gambling to leapfrog in status?," Review of Economics of the Household, Springer, vol. 15(4), pages 1291-1319, December.
    6. Daniel Arnold, 2013. "Benefit Morale and Cross-Country Diversity in Sick Pay Entitlements," Kyklos, Wiley Blackwell, vol. 66(1), pages 27-45, February.
    7. Corneo, Giacomo, 2002. "The efficient side of progressive income taxation," European Economic Review, Elsevier, vol. 46(7), pages 1359-1368, July.
    8. Yongjin Park, 2010. "The Second Paycheck to Keep Up with the Joneses: Relative Income Concerns and Labor Market Decisions of Married Women," Eastern Economic Journal, Palgrave Macmillan;Eastern Economic Association, vol. 36(2), pages 255-276, Spring.
    9. Laszlo Goerke, 2014. "Tax Evasion by Individuals," IAAEU Discussion Papers 201409, Institute of Labour Law and Industrial Relations in the European Union (IAAEU).
    10. Goerke, Laszlo & Pannenberg, Markus, 2015. "Direct evidence for income comparisons and subjective well-being across reference groups," Economics Letters, Elsevier, vol. 137(C), pages 95-101.
    11. Adrian Chadi, 2019. "Dissatisfied with life or with being interviewed? Happiness and the motivation to participate in a survey," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 53(3), pages 519-553, October.
    12. AndrewE. Clark & Nicolai Kristensen & Niels Westergård-Nielsen, 2009. "Job Satisfaction and Co-worker Wages: Status or Signal?," Economic Journal, Royal Economic Society, vol. 119(536), pages 430-447, March.
    13. Ferdinand A. von Siemens, 2012. "Social Preferences, Sorting, and Competition," Scandinavian Journal of Economics, Wiley Blackwell, vol. 114(3), pages 780-807, September.
    14. Dixon, Huw David, 1988. "Unions, Oligopoly and the Natural Range of Employment," Economic Journal, Royal Economic Society, vol. 98(393), pages 1127-1147, December.
    15. Bernard, Mark & Hett, Florian & Mechtel, Mario, 2016. "Social identity and social free-riding," European Economic Review, Elsevier, vol. 90(C), pages 4-17.
    16. repec:hal:spmain:info:hdl:2441/3ile1g7sqe8kfpi2d1e7jp82im is not listed on IDEAS
    17. Wendner, Ronald & Goulder, Lawrence H., 2008. "Status effects, public goods provision, and excess burden," Journal of Public Economics, Elsevier, vol. 92(10-11), pages 1968-1985, October.
    18. Godechot, Olivier & Senik, Claudia, 2015. "Wage comparisons in and out of the firm. Evidence from a matched employer–employee French database," Journal of Economic Behavior & Organization, Elsevier, vol. 117(C), pages 395-410.
    19. Ernst Fehr & Klaus M. Schmidt, 1999. "A Theory of Fairness, Competition, and Cooperation," The Quarterly Journal of Economics, Oxford University Press, vol. 114(3), pages 817-868.
    20. Sullivan, Daniel, 1989. "Monopsony Power in the Market for Nurses," Journal of Law and Economics, University of Chicago Press, vol. 32(2), pages 135-178, October.
    21. Jang-Ting Guo, 2005. "Tax Policy Under Keeping Up with the Joneses and Imperfect Competition," Annals of Economics and Finance, Society for AEF, vol. 6(1), pages 25-36, May.
    22. Gylfason, Thorvaldur & Lindbeck, Assar, 1984. "Union Rivalry and Wages: An Oligopolistic Approach," Economica, London School of Economics and Political Science, vol. 51(202), pages 129-139, May.
    23. Goerke, Laszlo & Hillesheim, Inga, 2013. "Relative consumption, working time, and trade unions," Labour Economics, Elsevier, vol. 24(C), pages 170-179.
    24. Bhaskar, V. & To, Ted, 2003. "Oligopsony and the distribution of wages," European Economic Review, Elsevier, vol. 47(2), pages 371-399, April.
    25. Thomas Aronsson & Olof Johansson‐Stenman, 2013. "Conspicuous Leisure: Optimal Income Taxation When Both Relative Consumption and Relative Leisure Matter," Scandinavian Journal of Economics, Wiley Blackwell, vol. 115(1), pages 155-175, January.
    26. N/A, 1973. "Chapter I. The Home Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 64(1), pages 7-27, May.
    27. Laszlo Goerke, 2017. "Sick pay reforms and health status in a unionised labour market," Scottish Journal of Political Economy, Scottish Economic Society, vol. 64(2), pages 115-142, May.
    28. Mujcic, Redzo & Frijters, Paul, 2015. "Conspicuous consumption, conspicuous health, and optimal taxation," Journal of Economic Behavior & Organization, Elsevier, vol. 111(C), pages 59-70.
    29. Martin Dufwenberg & Paul Heidhues & Georg Kirchsteiger & Frank Riedel & Joel Sobel, 2011. "Other-Regarding Preferences in General Equilibrium," Review of Economic Studies, Oxford University Press, vol. 78(2), pages 613-639.
    30. N/A, 1973. "Chapter II. The World Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 65(1), pages 26-43, August.
    31. de la Croix, David, 1994. "Wage Interdependence through Decentralized Bargaining," Journal of Economic Surveys, Wiley Blackwell, vol. 8(4), pages 371-403, December.
    32. N/A, 1973. "Chapter I. The Home Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 65(1), pages 7-25, August.
    33. David Card & Alexandre Mas & Enrico Moretti & Emmanuel Saez, 2012. "Inequality at Work: The Effect of Peer Salaries on Job Satisfaction," American Economic Review, American Economic Association, vol. 102(6), pages 2981-3003, October.
    34. Goerke, Laszlo, 2013. "Relative consumption and tax evasion," Journal of Economic Behavior & Organization, Elsevier, vol. 87(C), pages 52-65.
    35. Ramarao Desiraju & David E. M. Sappington, 2007. "Equity and Adverse Selection," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 16(2), pages 285-318, June.
    36. Olivier Godechot & Claudia Senik, 2015. "Wage comparisons in and out of the firm," PSE - Labex "OSE-Ouvrir la Science Economique" halshs-01314331, HAL.
    37. N/A, 1973. "Chapter II. The Home Economy Forecast," National Institute Economic Review, National Institute of Economic and Social Research, vol. 63(1), pages 34-47, February.
    38. Bhaskar, V & To, Ted, 1999. "Minimum Wages for Ronald McDonald Monopsonies: A Theory of Monopsonistic Competition," Economic Journal, Royal Economic Society, vol. 109(455), pages 190-203, April.
    39. A. Mauleon & Vincent Vannetelbosch & Cecilia Vergari, 2014. "Unions' Relative Concerns And Strikes In Wage Bargaining," Bulletin of Economic Research, Wiley Blackwell, vol. 66(4), pages 374-383, October.
    40. Laszlo Goerke, 2017. "Tax evasion in a Cournot oligopoly with endogenous entry," International Tax and Public Finance, Springer;International Institute of Public Finance, vol. 24(5), pages 754-779, September.
    41. Gary Charness & Peter Kuhn, 2007. "Does Pay Inequality Affect Worker Effort? Experimental Evidence," Journal of Labor Economics, University of Chicago Press, vol. 25(4), pages 693-723.
    42. Anat Bracha & Uri Gneezy & George Loewenstein, 2015. "Relative Pay and Labor Supply," Journal of Labor Economics, University of Chicago Press, vol. 33(2), pages 297-315.
    43. Wai Chiu Woo, 2016. "Status Goods and Market Powers," German Economic Review, Verein für Socialpolitik, vol. 17(1), pages 26-35, February.
    44. Pissarides, Christopher A, 1985. "Short-run Equilibrium Dynamics of Unemployment Vacancies, and Real Wages," American Economic Review, American Economic Association, vol. 75(4), pages 676-690, September.
    45. Harald Uhlig & Lars Ljungqvist, 2000. "Tax Policy and Aggregate Demand Management under Catching Up with the Joneses," American Economic Review, American Economic Association, vol. 90(3), pages 356-366, June.
    46. Aronsson, Thomas & Johansson-Stenman, Olof, 2008. "When the Joneses' consumption hurts: Optimal public good provision and nonlinear income taxation," Journal of Public Economics, Elsevier, vol. 92(5-6), pages 986-997, June.
    47. Liu, Wen-Fang & Turnovsky, Stephen J., 2005. "Consumption externalities, production externalities, and long-run macroeconomic efficiency," Journal of Public Economics, Elsevier, vol. 89(5-6), pages 1097-1129, June.
    48. Aronsson, Thomas & Johansson-Stenman, Olof, 2015. "Keeping up with the Joneses, the Smiths and the Tanakas: On international tax coordination and social comparisons," Journal of Public Economics, Elsevier, vol. 131(C), pages 71-86.
    49. N/A, 1973. "Chapter I. The Home Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 66(1), pages 8-37, November.
    50. Choudhary, M. Ali & Levine, Paul, 2006. "Idle worship," Economics Letters, Elsevier, vol. 90(1), pages 77-83, January.
    51. Block, Jörn & Goerke, Laszlo & Millán, José María & Román, Concepción, 2014. "Family employees and absenteeism," Economics Letters, Elsevier, vol. 123(1), pages 94-99.
    52. Wai Woo, 2011. "Status and welfare under monopolistic competition," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 36(2), pages 227-239, February.
    53. Nelson, Phillip, 1973. "The Elasticity of Labor Supply to the Individual Firm," Econometrica, Econometric Society, vol. 41(5), pages 853-866, September.
    54. N/A, 1973. "Calendar of Economic Events April—June 1973," National Institute Economic Review, National Institute of Economic and Social Research, vol. 65(1), pages 64-67, August.
    55. Diamond, Peter A, 1982. "Aggregate Demand Management in Search Equilibrium," Journal of Political Economy, University of Chicago Press, vol. 90(5), pages 881-894, October.
    56. N/A, 1973. "Chapter I. The British Economy to End-1972," National Institute Economic Review, National Institute of Economic and Social Research, vol. 63(1), pages 9-33, February.
    57. Steven C. Salop, 1979. "Monopolistic Competition with Outside Goods," Bell Journal of Economics, The RAND Corporation, vol. 10(1), pages 141-156, Spring.
    58. Redzo Mujcic & Paul Frijters, 2013. "Economic choices and status: measuring preferences for income rank," Oxford Economic Papers, Oxford University Press, vol. 65(1), pages 47-73, January.
    59. Vanessa Mertins & Andrea B. Schote & Jobst Meyer, 2013. "Variants of the Monoamine Oxidase A Gene (MAOA) Predict Free-riding Behavior in Women in a Strategic Public Goods Experiment," IAAEU Discussion Papers 201302, Institute of Labour Law and Industrial Relations in the European Union (IAAEU).
    60. Aronsson, Thomas & Johansson-Stenman, Olof, 2014. "Positional preferences in time and space: Optimal income taxation with dynamic social comparisons," Journal of Economic Behavior & Organization, Elsevier, vol. 101(C), pages 1-23.
    61. Oswald, Andrew J, 1979. "Wage Determination in an Economy with Many Trade Unions," Oxford Economic Papers, Oxford University Press, vol. 31(3), pages 369-385, November.
    62. Unknown, 1973. "Economics of Tractor Utilization," Indian Journal of Agricultural Economics, Indian Society of Agricultural Economics, vol. 28(1), pages 1-11.
    63. N/A, 1973. "Chapter IV. The World Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 63(1), pages 57-87, February.
    64. Desiraju, Ramarao & Sappington, David E.M., 2007. "Equity and adverse selection with correlated costs," Economics Letters, Elsevier, vol. 95(3), pages 402-407, June.
    65. Burdett, Kenneth & Mortensen, Dale T, 1998. "Wage Differentials, Employer Size, and Unemployment," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 39(2), pages 257-273, May.
    66. Frank, Robert H, 1984. "Are Workers Paid Their Marginal Products?," American Economic Review, American Economic Association, vol. 74(4), pages 549-571, September.
    67. Leo Kaas, 2009. "Does Equal Pay Legislation Reduce Labour Market Inequality?," Scandinavian Journal of Economics, Wiley Blackwell, vol. 111(1), pages 51-71, March.
    68. Nelson, Phillip, 1973. "Economics of Information: Discussion," American Economic Review, American Economic Association, vol. 63(2), pages 50-51, May.
    69. Bill Dupor & Wen-Fang Liu, 2003. "Jealousy and Equilibrium Overconsumption," American Economic Review, American Economic Association, vol. 93(1), pages 423-428, March.
    70. Persson, Mats, 1995. " Why Are Taxes So High in Egalitarian Societies?," Scandinavian Journal of Economics, Wiley Blackwell, vol. 97(4), pages 569-580, December.
    71. Boris Hirsch, 2009. "The Gender Pay Gap Under Duopsony: Joan Robinson Meets Harold Hotelling," Scottish Journal of Political Economy, Scottish Economic Society, vol. 56(5), pages 543-558, November.
    72. Chadi, Adrian, 2013. "The role of interviewer encounters in panel responses on life satisfaction," Economics Letters, Elsevier, vol. 121(3), pages 550-554.
    73. Clark, Andrew E. & Oswald, Andrew J., 1998. "Comparison-concave utility and following behaviour in social and economic settings," Journal of Public Economics, Elsevier, vol. 70(1), pages 133-155, October.
    74. Agnes Baeker & Mario Mechtel, 2015. "Peer Settings Induce Cheating on Task Performance," IAAEU Discussion Papers 201506, Institute of Labour Law and Industrial Relations in the European Union (IAAEU).
    75. Alan Manning & Ted To, 2002. "Oligopsony and Monopsonistic Competition in Labor Markets," Journal of Economic Perspectives, American Economic Association, vol. 16(2), pages 155-174, Spring.
    76. N/A, 1973. "Chapter II. The World Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 64(1), pages 28-43, May.
    77. Ireland, N. J., 2001. "Optimal income tax in the presence of status effects," Journal of Public Economics, Elsevier, vol. 81(2), pages 193-212, August.
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    Cited by:

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    2. Alastair Langtry, 2022. "Keeping up with "The Joneses": reference dependent choice with social comparisons," Papers 2203.10305, arXiv.org, revised Aug 2022.
    3. Laszlo Goerke & Michael Neugart, 2021. "Social preferences, monopsony and government intervention," Canadian Journal of Economics/Revue canadienne d'économique, John Wiley & Sons, vol. 54(2), pages 864-891, May.
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    5. Laszlo Goerke, 2020. "Horizontal FDI in a Dynamic Cournot - Oligopoly with Endogenous Entry," IAAEU Discussion Papers 202003, Institute of Labour Law and Industrial Relations in the European Union (IAAEU).
    6. Laszlo Goerke & Michael Neugart, 2020. "Thorstein Veblen, Joan Robinson, and George Stigler (probably) never met: Social Preferences, Monopsony, and Government Intervention," IAAEU Discussion Papers 202001, Institute of Labour Law and Industrial Relations in the European Union (IAAEU).

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    More about this item

    Keywords

    Social comparisons; Status seeking; Oligopsony; Wage distribution; Functional income distribution; Welfare;
    All these keywords.

    JEL classification:

    • D62 - Microeconomics - - Welfare Economics - - - Externalities
    • J22 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Time Allocation and Labor Supply
    • J42 - Labor and Demographic Economics - - Particular Labor Markets - - - Monopsony; Segmented Labor Markets

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