Are low-skill public sector workers really overpaid? A quasi-differenced panel data analysis
AbstractPublic--private sectoral wage differentials have been studied extensively using quantile regression techniques. These typically find large public sector premiums at the bottom of the wage distribution. This may imply that low skill workers are ‘overpaid’, prompting concerns over efficiency. We note several other potential explanations for this result and explicitly test whether the premium varies with skill, using Australian data. We use a quasi-differenced Generalized Method of Moments (GMM) panel data model which has not been previously applied to this topic, internationally. Unlike other available methods, this technique identifies sectoral differences in returns to unobserved skill. It also facilitates a decomposition of the wage gap into components explained by differences in returns to all (observed and unobserved) skills and by differences in their stock. We find no evidence to suggest that the premium varies with skill. One interpretation is that the compressed wage profile of the public sector induces the best workers (on unobserved skills) to join the public sector in low wage occupations, vice versa in high wage occupations. We also estimate the average public sector premium to be 6% for women and statistically insignificant (4%) for men.
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Bibliographic InfoArticle provided by Taylor & Francis Journals in its journal Applied Economics.
Volume (Year): 45 (2013)
Issue (Month): 14 (May)
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Other versions of this item:
- Peter Siminski, 2011. "Are Low Skill Public Sector Workers Really Overpaid? A Quasi-Differenced Panel Data Analysis," Economics Working Papers wp11-10, School of Economics, University of Wollongong, NSW, Australia.
- J45 - Labor and Demographic Economics - - Particular Labor Markets - - - Public Sector Labor Markets
- J31 - Labor and Demographic Economics - - Wages, Compensation, and Labor Costs - - - Wage Level and Structure; Wage Differentials
- J38 - Labor and Demographic Economics - - Wages, Compensation, and Labor Costs - - - Public Policy
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Jacob A. Mincer, 1974. "Introduction to "Schooling, Experience, and Earnings"," NBER Chapters, in: Schooling, Experience, and Earnings, pages 1-4 National Bureau of Economic Research, Inc.
- Wooden, Mark, 2001.
"Union Wage Effects in the Presence of Enterprise Bargaining,"
The Economic Record,
The Economic Society of Australia, vol. 77(236), pages 1-18, March.
- Mark Wooden, 2000. "Union Wage Effects in the Presence of Enterprise Bargaining," Melbourne Institute Working Paper Series wp2000n07, Melbourne Institute of Applied Economic and Social Research, The University of Melbourne.
- Hartog, Joop & Oosterbeek, Hessel, 1993. "Public and private sector wages in the Netherlands," European Economic Review, Elsevier, vol. 37(1), pages 97-114, January.
- Davidson, Russell & MacKinnon, James G., 1993. "Estimation and Inference in Econometrics," OUP Catalogue, Oxford University Press, number 9780195060119, September.
- Ben Jann, 2008.
"A Stata implementation of the Blinder-Oaxaca decomposition,"
ETH Zurich Sociology Working Papers
5, ETH Zurich, Chair of Sociology, revised 14 May 2008.
- Ben Jann, 2008. "OAXACA: Stata module to compute the Blinder-Oaxaca decomposition," Statistical Software Components S456936, Boston College Department of Economics, revised 25 Aug 2011.
- Miller, Paul & Mulvey, Charles, 1996. "Unions, Firm Size and Wages," The Economic Record, The Economic Society of Australia, vol. 72(217), pages 138-53, June.
- Lemieux, Thomas, 1998. "Estimating the Effects of Unions on Wage Inequality in a Panel Data Model with Comparative Advantage and Nonrandom Selection," Journal of Labor Economics, University of Chicago Press, vol. 16(2), pages 261-91, April.
- Costas Kanellopoulos, 1997. "Public-private wage differentials in Greece," Applied Economics, Taylor & Francis Journals, vol. 29(8), pages 1023-1032.
- Borland, Jeff & Hirschberg, Joe & Lye, Jenny, 1998.
"Earnings of Public Sector and Private Sector Employees in Australia: Is There a Difference?,"
The Economic Record,
The Economic Society of Australia, vol. 74(224), pages 36-53, March.
- Borland, J. & Hirschberg, J. & Lyse, J., 1996. "Earning of Public Sector and Private Sector Employees in Australia: Is There a Difference?," Department of Economics - Working Papers Series 514, The University of Melbourne.
- Gregory, Robert G. & Borland, Jeff, 1999. "Recent developments in public sector labor markets," Handbook of Labor Economics, in: O. Ashenfelter & D. Card (ed.), Handbook of Labor Economics, edition 1, volume 3, chapter 53, pages 3573-3630 Elsevier.
- Katz, Lawrence & Gibbons, Robert & Lemieux, Thomas & Parent, Daniel, 2005.
"Comparative Advantage, Learning, and Sectoral Wage Determination,"
2766651, Harvard University Department of Economics.
- Robert Gibbons & Lawrence F. Katz & Thomas Lemieux & Daniel Parent, 2005. "Comparative Advantage, Learning, and Sectoral Wage Determination," Journal of Labor Economics, University of Chicago Press, vol. 23(4), pages 681-724, October.
- Robert Gibbons & Lawrence F. Katz & Thomas Lemieux & Daniel Parent, 2002. "Comparative Advantage, Learning, and Sectoral Wage Determination," CIRANO Working Papers 2002s-35, CIRANO.
- Robert Gibbons & Lawrence F. Katz & Thomas Lemieux & Daniel Parent, 2002. "Comparative Advantage, Learning, and Sectoral Wage Determination," NBER Working Papers 8889, National Bureau of Economic Research, Inc.
- Lucifora, Claudio & Meurs, Dominique, 2004.
"The Public Sector Pay Gap in France, Great Britain and Italy,"
IZA Discussion Papers
1041, Institute for the Study of Labor (IZA).
- Claudio Lucifora & Dominique Meurs, 2006. "The Public Sector Pay Gap In France, Great Britain And Italy," Review of Income and Wealth, International Association for Research in Income and Wealth, vol. 52(1), pages 43-59, 03.
- Lucifora C. & Meurs D., 2004. "The Public Sector Pay Gap in France, Great Britain and Italy," Working Papers ERMES 0403, ERMES, University Paris 2.
- Claudio Lucifora & Dominique Meurs, 2004. "The Public Sector Pay Gap in France, Great Britain and Italy," CHILD Working Papers wp04_04, CHILD - Centre for Household, Income, Labour and Demographic economics - ITALY.
- Gyourko, Joseph & Tracy, Joseph, 1988.
"An Analysis of Public- and Private-Sector Wages Allowing for Endogenous Choices of Both Government and Union Status,"
Journal of Labor Economics,
University of Chicago Press, vol. 6(2), pages 229-53, April.
- Joseph Gyourko & Joseph Tracy, 1986. "An Analysis of Public and Private Sector Wages Allowing for Endogenous Choices of Both Government and Union Status," NBER Working Papers 1920, National Bureau of Economic Research, Inc.
- Axel Heitmueller, 2006. "Public-private sector pay differentials in a devolved Scotland," Journal of Applied Economics, Universidad del CEMA, vol. 0, pages 295-323, November.
- Hou, Jack W., 1993. "Public-private wage comparison: A case study of Taiwan," Journal of Asian Economics, Elsevier, vol. 4(2), pages 347-362.
- Hansen, Lars Peter, 1982. "Large Sample Properties of Generalized Method of Moments Estimators," Econometrica, Econometric Society, vol. 50(4), pages 1029-54, July.
- Keith A. Bender, 2003. "Examining Equality between Public- and Private-Sector Wage Distributions," Economic Inquiry, Western Economic Association International, vol. 41(1), pages 62-79, January.
- Shoshana Neuman & Ronald Oaxaca, 2004. "Wage Decompositions with Selectivity-Corrected Wage Equations: A Methodological Note," Journal of Economic Inequality, Springer, vol. 2(1), pages 3-10, April.
- Blaise Melly, 2005. "Public-private sector wage differentials in Germany: Evidence from quantile regression," Empirical Economics, Springer, vol. 30(2), pages 505-520, 09.
- Rebecca Edwards, 2006. "Maternity Leave and the Evidence for Compensating Wage Differentials in Australia," The Economic Record, The Economic Society of Australia, vol. 82(258), pages 281-297, 09.
- Preston, Alison, 1997. "Where Are We Now with Human Capital Theory in Australia?," The Economic Record, The Economic Society of Australia, vol. 73(220), pages 51-78, March.
- Mark Wooden & Diana Warren, 2003. "The Characteristics of Casual and Fixed-Term Employment: Evidence from the HILDA Survey," Melbourne Institute Working Paper Series wp2003n15, Melbourne Institute of Applied Economic and Social Research, The University of Melbourne.
- Stock, James H & Wright, Jonathan H & Yogo, Motohiro, 2002. "A Survey of Weak Instruments and Weak Identification in Generalized Method of Moments," Journal of Business & Economic Statistics, American Statistical Association, vol. 20(4), pages 518-29, October.
- Mueller, Richard E., 1998. "Public-private sector wage differentials in Canada: evidence from quantile regressions," Economics Letters, Elsevier, vol. 60(2), pages 229-235, August.
- Jacob A. Mincer, 1974. "Schooling, Experience, and Earnings," NBER Books, National Bureau of Economic Research, Inc, number minc74-1.
- Bargain, Olivier & Melly, Blaise, 2008. "Public Sector Pay Gap in France: New Evidence Using Panel Data," IZA Discussion Papers 3427, Institute for the Study of Labor (IZA).
- Palsson, Anne-Marie, 1996. "Does the degree of relative risk aversion vary with household characteristics?," Journal of Economic Psychology, Elsevier, vol. 17(6), pages 771-787, December.
- Terrell, Katherine, 1993. "Public-private wage differentials in Haiti Do public servants earn a rent?," Journal of Development Economics, Elsevier, vol. 42(2), pages 293-314, December.
- Lixin Cai & Amy Y.C. Liu, 2008. "Public-Private Wage Gap in Australia: Variation Along the Distribution," CEPR Discussion Papers 581, Centre for Economic Policy Research, Research School of Economics, Australian National University.
- David Card & Thomas Lemieux & W. Craig Riddell, 2004. "Unions and Wage Inequality," Journal of Labor Research, Transaction Publishers, vol. 25(4), pages 519-562, October.
- Ramos, Raul & Sanromá, Esteban & Simón, Hipólito, 2014. "Public-Private Sector Wage Differentials by Type of Contract: Evidence from Spain," IZA Discussion Papers 8158, Institute for the Study of Labor (IZA).
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