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Exports, Imports and Wages: Evidence from Matched Firm-Worker-Product Panels

  • Martins, Pedro S.


    (Queen Mary, University of London)

  • Opromolla, Luca David


    (Banco de Portugal)

The analysis of the effects of firm-level international trade on wages has so far focused on the role of exports, which are also typically treated as a composite good. However, we show in this paper that firm-level imports can actually be a wage determinant as important as exports. Furthermore, we also find significant differences in the relationship between trade and wages across types of products. In particular, firms that increase their exports (imports) of high- (intermediate-) technology products tend to increase their salaries. Our analysis is based on unique data from Portugal, obtained by merging a matched firm-worker panel and a matched firm-transaction panel. Our data set follows the population of manufacturing firms and all their workers from 1995 to 2005 and allows for several control variables, including job-spell fixed effects.

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Paper provided by Institute for the Study of Labor (IZA) in its series IZA Discussion Papers with number 4646.

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Length: 54 pages
Date of creation: Dec 2009
Date of revision:
Handle: RePEc:iza:izadps:dp4646
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  1. Martins, Pedro S., 2007. "Dismissals for Cause: The Difference That Just Eight Paragraphs Can Make," IZA Discussion Papers 3112, Institute for the Study of Labor (IZA).
  2. Amiti, Mary & Konings, Jozef, 2005. "Trade Liberalization, Intermediate Inputs and Productivity: Evidence from Indonesia," CEPR Discussion Papers 5104, C.E.P.R. Discussion Papers.
  3. Kasahara, Hiroyuki & Rodrigue, Joel, 2008. "Does the use of imported intermediates increase productivity? Plant-level evidence," Journal of Development Economics, Elsevier, vol. 87(1), pages 106-118, August.
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  6. Abowd, J.M. & Kramarz, F. & Margolis, D.N., 1995. "High-Wage Workers and High-Wage Firms," Cahiers de recherche 9503, Universite de Montreal, Departement de sciences economiques.
  7. Carlo Altomonte & Gabor Békés, 2009. "Trade Complexity and Productivity," KITeS Working Papers 016, KITeS, Centre for Knowledge, Internationalization and Technology Studies, Universita' Bocconi, Milano, Italy, revised Jul 2009.
  8. Mary Amiti & Donald R. Davis, 2008. "Trade, Firms, and Wages: Theory and Evidence," NBER Working Papers 14106, National Bureau of Economic Research, Inc.
  9. Cabral, Luís M B & Mata, José, 2001. "On the Evolution of the Firm Size Distribution: Facts and Theory," CEPR Discussion Papers 3045, C.E.P.R. Discussion Papers.
  10. Thorsten Schank & Claus Schnabel & Joachim Wagner, 2006. "Do exporters really pay higher wages? First evidence from German linked employer-employee data," Working Paper Series in Economics 28, University of Lüneburg, Institute of Economics.
  11. Carneiro, Anabela & Guimaraes, Paulo & Portugal, Pedro, 2009. "Real Wages and the Business Cycle: Accounting for Worker and Firm Heterogeneity," IZA Discussion Papers 4174, Institute for the Study of Labor (IZA).
  12. Sofronis K. Clerides & Saul Lach & James R. Tybout, 1998. "Is Learning By Exporting Important? Micro-Dynamic Evidence From Colombia, Mexico, And Morocco," The Quarterly Journal of Economics, MIT Press, vol. 113(3), pages 903-947, August.
  13. Van Biesebroeck, Johannes, 2005. "Exporting raises productivity in sub-Saharan African manufacturing firms," Journal of International Economics, Elsevier, vol. 67(2), pages 373-391, December.
  14. Andrew B. Bernard & J. Bradford Jensen & Stephen J. Redding & Peter K. Schott, 2007. "Firms in International Trade," Journal of Economic Perspectives, American Economic Association, vol. 21(3), pages 105-130, Summer.
  15. J Bradford Jensen & Andrew B Bernard, 2001. "Why Some Firms Export," Working Papers 01-05, Center for Economic Studies, U.S. Census Bureau.
  16. Halpern, László & Koren, Miklós & Szeidl, Adam, 2005. "Imports and Productivity," CEPR Discussion Papers 5139, C.E.P.R. Discussion Papers.
  17. Pinelopi Goldberg & Amit Khandelwal & Nina Pavcnik & Petia Topalova, 2009. "Imported Intermediate Inputs and Domestic Product Growth: Evidence from India," Working Papers 1179, Princeton University, Department of Economics, Center for Economic Policy Studies..
  18. 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.
  19. Richard B. Freeman, 1995. "Are Your Wages Set in Beijing?," Journal of Economic Perspectives, American Economic Association, vol. 9(3), pages 15-32, Summer.
  20. Martins, Pedro S., 2004. "Do Foreign Firms Really Pay Higher Wages? Evidence from Different Estimators," IZA Discussion Papers 1388, Institute for the Study of Labor (IZA).
  21. Pedro S. Martins, 2011. "Paying More To Hire The Best? Foreign Firms, Wages, And Worker Mobility," Economic Inquiry, Western Economic Association International, vol. 49(2), pages 349-363, 04.
  22. João Amador & Luca Opromolla, 2013. "Product and destination mix in export markets," Review of World Economics (Weltwirtschaftliches Archiv), Springer, vol. 149(1), pages 23-53, March.
  23. Munch, Jakob R. & Skaksen, Jan Rose, 2006. "Human Capital and Wages in Exporting Firms," IZA Discussion Papers 2409, Institute for the Study of Labor (IZA).
  24. Jan De Loecker, 2004. "Do Exports Generate Higher Productivity? Evidence from Slovenia," LICOS Discussion Papers 15104, LICOS - Centre for Institutions and Economic Performance, KU Leuven.
  25. Davidson, Carl & Matusz, Steven J. & Shevchenko, Andrei, 2008. "Globalization and firm level adjustment with imperfect labor markets," Journal of International Economics, Elsevier, vol. 75(2), pages 295-309, July.
  26. Paulo Guimarães & Pedro Portugal, 2009. "A Simple Feasible Alternative Procedure to Estimate Models with High-Dimensional Fixed Effects," Working Papers w200909, Banco de Portugal, Economics and Research Department.
  27. Iacovone, Leonardo & Javorcik, Beata S., 2008. "Multi-product exporters : diversification and micro-level dynamics," Policy Research Working Paper Series 4723, The World Bank.
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