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Are Low Skill Public Sector Workers Really Overpaid? A Quasi-Differenced Panel Data Analysis

Public-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 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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File URL: http://www.uow.edu.au/content/groups/public/@web/@commerce/@econ/documents/doc/uow114611.pdf
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Paper provided by School of Economics, University of Wollongong, NSW, Australia in its series Economics Working Papers with number wp11-10.

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Length: 33 pages
Date of creation: 2011
Date of revision:
Handle: RePEc:uow:depec1:wp11-10
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School of Economics, University of Wollongong, Northfields Avenue, Wollongong NSW 2522 Australia

Phone: +612 4221-3659
Fax: +612 4221-3725
Web page: http://business.uow.edu.au/econ/index.html

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  1. 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).
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. Hartog, Joop & Oosterbeek, Hessel, 1993. "Public and private sector wages in the Netherlands," European Economic Review, Elsevier, vol. 37(1), pages 97-114, January.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. 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.
  16. 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.
  17. 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.
  18. Hansen, Lars Peter, 1982. "Large Sample Properties of Generalized Method of Moments Estimators," Econometrica, Econometric Society, vol. 50(4), pages 1029-54, July.
  19. Blaise Melly, 2005. "Public-private sector wage differentials in Germany: Evidence from quantile regression," Empirical Economics, Springer, vol. 30(2), pages 505-520, 09.
  20. Hou, Jack W., 1993. "Public-private wage comparison: A case study of Taiwan," Journal of Asian Economics, Elsevier, vol. 4(2), pages 347-362.
  21. 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.
  22. 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.
  23. 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.
  24. 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.
  25. 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.
  26. Jacob A. Mincer, 1974. "Schooling, Experience, and Earnings," NBER Books, National Bureau of Economic Research, Inc, number minc74-1.
  27. 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).
  28. Costas Kanellopoulos, 1997. "Public-private wage differentials in Greece," Applied Economics, Taylor & Francis Journals, vol. 29(8), pages 1023-1032.
  29. Davidson, Russell & MacKinnon, James G., 1993. "Estimation and Inference in Econometrics," OUP Catalogue, Oxford University Press, number 9780195060119, December.
  30. 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.
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