Review of World Economics

, Volume 145, Issue 1, pp 57–73 | Cite as

Specialization, outsourcing and wages

  • Jakob Roland Munch
  • Jan Rose SkaksenEmail author
Original Paper


This paper studies the impact of outsourcing on individual wages. In contrast to the standard approach in the literature, we focus on domestic outsourcing as well as foreign outsourcing. We argue that if outsourcing is associated with specialization gains arising from an increase in the division of labor, domestic outsourcing tends to increase wages for both unskilled and skilled labor. We use a panel data set of workers in Danish manufacturing industries to show that domestic and foreign outsourcing affect wages as predicted.


Outsourcing Comparative advantage Specialization Wages 

JEL Classification

F16 J31 C23 


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Financial support from the Danish Social Science Research Council is gratefully acknowledged. The paper has benefitted from comments from seminar participants at Department of Economics, Aarhus University and Economic Policy Research Unit, University of Copenhagen.


  1. Abowd, J. M., & Kramarz, F. (1999). The analysis of labor markets using matched employer-employee data. In O. Ashenfelter, & D. Card (Eds.), Handbook of labor economics Vol. III. Amsterdam: North Holland.Google Scholar
  2. Arndt, S. W. (1997). Globalization and the open economy. North American Journal of Economics and Finance, 8, 71–79.CrossRefGoogle Scholar
  3. Becker, G. S., & Murphy, K. (1992). The division of labor, coordination costs and knowledge. Quarterly Journal of Economics, 107, 1137–1160.CrossRefGoogle Scholar
  4. Bernard, A. B., Eaton, J., Jensen, J. B., & Kortum, S. (2003). Plants and productivity in international trade. American Economic Review, 93, 1268–1290.CrossRefGoogle Scholar
  5. Bound, J., Jaeger, D. A., & Baker, R. (1995). Problems with instrumental variables estimation when the correlation between the instruments and the endogeneous explanatory variable is weak. Journal of the American Statistical Association, 90, 443–450.CrossRefGoogle Scholar
  6. Duranton, G., & Jayet, H. (2005). Is the division of labour limited by the extent of the market? Evidence from French cities. CEPR Discussion Paper No. 5087.Google Scholar
  7. Edin, P.-A., Frederiksson, P., & Lundborg, P. (2004). The effect of trade on earnings—evidence from Swedish micro data. Oxford Economic Papers, 56, 231–241.CrossRefGoogle Scholar
  8. Ethier, W. J. (1982). National and international returns to scale in the modern theory of international trade. American Economic Review, 72, 389–405.Google Scholar
  9. Feenstra, R. C., & Hanson, G. H. (1996). Globalization, outsourcing, and wage inequality. American Economic Review, 86, 240–245.Google Scholar
  10. Feenstra, R. C., & Hanson, G. H. (1999). The impact of outsourcing and high-technology capital on wages: estimates for the United States, 1979–1990. Quarterly Journal of Economics, 114, 907–940.CrossRefGoogle Scholar
  11. Feenstra, R. C., & Hanson, G. H. (2003). Global production sharing and rising inequality: a survey of trade and wages. In E. K. Choi, & J. Harrigan (Eds.), Handbook of international trade, Malden: Blackwell.Google Scholar
  12. Francois, J. F., & Nelson, D. (2002). A geometry of specialisation. Economic Journal, 112, 649–678.CrossRefGoogle Scholar
  13. Geishecker, I., & Görg, H. (2008). Winners and losers: a micro-level analysis of international outsourcing and wages. Canadian Journal of Economics, 41, 243–270.Google Scholar
  14. Hall, A. R., & Peixe, F. P. M. (2003). A consistent method for the selection of relevant instruments. Econometrics Reviews, 22, 269–287.CrossRefGoogle Scholar
  15. Hayashi, F. (2000). Econometrics. New Jersey: Princeton University Press.Google Scholar
  16. Hijzen A., Görg H., & Hine R. C. (2005). International outsourcing and the skill structure of labour demand in the United Kingdom. Economic Journal, 115, 861–879.CrossRefGoogle Scholar
  17. Katz, L. F., & Summers, L. H. (1989). Industry rents: evidence and implications. Brookings Papers on Economic Activity, pp. 209–275.Google Scholar
  18. Kohler, W. (2004). International outsourcing and factor prices with multistage production. Economic Journal, 114, 166–185.CrossRefGoogle Scholar
  19. Moulton, B. R. (1990). An illustration of a pitfall in estimating the effects of aggregate variables on micro units. Review of Economics and Statistics, 72, 334–338.CrossRefGoogle Scholar
  20. Munch, J. R., & Skaksen, J. R. (2005). Specialization, outsourcing and wages. IZA Discussion Paper No. 1907.Google Scholar
  21. Oi, W. Y., & Idson, T. L. (1999). Firm size and wages. In A. Ashenfelter, & D. Card (Eds.), Handbook of labor economics, Vol. 3 (pp. 2165–2214). Amsterdam: Elsevier Science.Google Scholar
  22. Stock, J., & Yogo, M. (2005). Testing for weak instruments in linear IV regressions. In D.W.K. Andrews, & J.H. Stock (Eds.), Identification and Inference for Econometric Models: Essays in Honor of Thomas Rothenberg. Cambridge, UK: Cambridge University PressGoogle Scholar

Copyright information

© Kiel Institute 2009

Authors and Affiliations

  1. 1.Department of EconomicsUniversity of Copenhagen, CEBRFrederiksbergDenmark
  2. 2.Department of EconomicsCopenhagen Business School, IZA, CEBRFrederiksbergDenmark

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