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Do outliers and unobserved heterogeneity explain the exporter productivity premium? Evidence from France, Germany and the United Kingdom

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  • Joachim Wagner

    ()
    (Leuphana University Lueneburg)

  • Yama Temouri

    ()
    (Aston Business School)

Abstract

A stylized fact from the literature on the Micro-econometrics of International Trade and a central implication of the heterogeneous firm models from the New New Trade Theory is that exporters are more productive than non-exporters. It is argued that this exporter productivity premium is due to extra costs of exporting that can be covered only by more productive firms. However, in recent papers that control for extreme observations and unobserved firm heterogeneity by applying a highly robust fixed-effects estimator, no such exporter productivity premium is found for firms from manufacturing and services industries in Germany. This paper uses enterprise level panel data for France, Germany and the United Kingdom from 2003 to 2008 to systematically investigate the role of outliers and unobserved firm heterogeneity for estimates of the exporter productivity premium. We report that outliers do have an influence on the estimated exporter productivity premium. We argue that the vanishing exporter premium in robust fixed effects estimations that is reported for all three countries is caused by characteristics of firms that start or stop to export over the period under investigation, and that are not representative for the bulk of firms that either export or not.

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Bibliographic Info

Article provided by AccessEcon in its journal Economics Bulletin.

Volume (Year): 33 (2013)
Issue (Month): 3 ()
Pages: 1931-1940

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Handle: RePEc:ebl:ecbull:eb-13-00437

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Keywords: Export; productivity premium; outlier; unobserved heterogeneity; robust estimation;

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  1. Vincenzo Verardi & Alice McCathie, 2012. "The S-estimator of multivariate location and scatter in Stata," Stata Journal, StataCorp LP, vol. 12(2), pages 299–307, June.
  2. David Greenaway & Richard Kneller, 2007. "Firm heterogeneity, exporting and foreign direct investment," Economic Journal, Royal Economic Society, vol. 117(517), pages F134-F161, 02.
  3. Joachim Wagner, 2011. "International Trade and Firm Performance: A Survey of Empirical Studies since 2006," Working Paper Series in Economics 210, University of Lüneburg, Institute of Economics.
  4. Vincenzo Verardi & Joachim Wagner, 2010. "Robust Estimation of Linear Fixed Effects Panel Data Models with an Application to the Exporter Productivity Premium," Working Paper Series in Economics 168, University of Lüneburg, Institute of Economics.
  5. Daniel S. Hamermesh, 2000. "The Craft of labormetrics," Industrial and Labor Relations Review, ILR Review, Cornell University, ILR School, vol. 53(3), pages 363-380, April.
  6. Verardi, Vincenzo & Wagner, Joachim, 2010. "Productivity Premia for German Manufacturing Firms Exporting to the Euro-Area and Beyond: First Evidence from Robust Fixed Effects Estimations," IZA Discussion Papers 4964, Institute for the Study of Labor (IZA).
  7. Joachim Wagner, 2005. "Exports and Productivity: A Survey of the Evidence fro Firm Level Data," International Trade 0504005, EconWPA.
  8. Marc J. Melitz, 2003. "The Impact of Trade on Intra-Industry Reallocations and Aggregate Industry Productivity," Econometrica, Econometric Society, vol. 71(6), pages 1695-1725, November.
  9. Bernard, Andrew B. & Jensen, J Bradford & Redding, Stephen J. & Schott, Peter K., 2011. "The Empirics of Firm Heterogeneity and International Trade," CEPR Discussion Papers 8677, C.E.P.R. Discussion Papers.
  10. Helpman, Elhanan, 2011. "Understanding Global Trade," Economics Books, Harvard University Press, number 9780674060784.
  11. Peter Gal & Alexander Hijzen & Zoltan Wolf, 2012. "The Role of Institutions and Firm Heterogeneity for Labour Market Adjustment: Cross-Country Firm-Level Evidence," OECD Social, Employment and Migration Working Papers 134, OECD Publishing.
  12. Elhanan Helpman, 2006. "Trade, FDI, and the Organization of Firms," NBER Working Papers 12091, National Bureau of Economic Research, Inc.
  13. Stephen J. Redding, 2011. "Theories of Heterogeneous Firms and Trade," Annual Review of Economics, Annual Reviews, vol. 3(1), pages 77-105, 09.
  14. Alexander Vogel & Joachim Wagner, 2011. "Robust estimates of exporter productivity premia in German business services enterprises," Working Paper Series in Economics 207, University of Lüneburg, Institute of Economics.
  15. Vincenzo Verardi & Christophe Croux, 2009. "Robust regression in Stata," Stata Journal, StataCorp LP, vol. 9(3), pages 439-453, September.
  16. Mark Doms & Eric J. Bartelsman, 2000. "Understanding Productivity: Lessons from Longitudinal Microdata," Journal of Economic Literature, American Economic Association, vol. 38(3), pages 569-594, September.
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