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Wage inequality, comparative advantage and skill biased technical change in South Africa

  • Joern Rattsoe


    (Department of Economics, Norwegian University of Science and Technology)

  • Hildegunn Ekroll Stokke


    (Department of Economics, Norwegian University of Science and Technology)

International trade may influence income distribution. This study takes as a starting point the puzzling development of relative wages between skilled and unskilled labor in South Africa. Wage inequality decreased during the sanctions period and increased with trade liberalization post Apartheid, contrary to the standard trade theory prediction for an economy with comparative advantage in unskilled labor. We calibrate a Ramsey growth model for South Africa to clarify and quantify the distributive effects of trade barriers, and offer an understanding of the South African experience based on the interaction between openness and skill biased technical change. The dependence on foreign technology increases with openness and gives higher degree of skill bias, which may explain the observed relative wage path. Our model calibration is an alternative to econometric studies separating between trade and technology effects. A counterfactual analysis shows that without sanctions and protectionism during the 1980s the skilled-unskilled wage gap is about 13% larger on average. The quantitative results imply that an increase in trade as share of GDP of 10% points generates an increase in the wage gap of 6.6%. The analysis reveals a tradeoff between growth and distribution.

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Paper provided by Department of Economics, Norwegian University of Science and Technology in its series Working Paper Series with number 9909.

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Length: 29 pages
Date of creation: 02 Mar 2009
Date of revision:
Handle: RePEc:nst:samfok:9909
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  1. Hildegunn Stokke, 2004. "Technology adoption and multiple growth paths: An intertemporal general equilibrium analysis of the catch-up process in Thailand," Review of World Economics (Weltwirtschaftliches Archiv), Springer, vol. 140(1), pages 80-109, March.
  2. Eric A. Verhoogen, 2008. "Trade, Quality Upgrading, and Wage Inequality in the Mexican Manufacturing Sector," The Quarterly Journal of Economics, MIT Press, vol. 123(2), pages 489-530, 05.
  3. Par Hansson & Magnus Henrekson, 1994. "What makes a country socially capable of catching up?," Review of World Economics (Weltwirtschaftliches Archiv), Springer, vol. 130(4), pages 760-783, December.
  4. Vandenbussche, Jérôme & Aghion, Philippe & Meghir, Costas, 2006. "Growth, distance to frontier and composition of human capital," Scholarly Articles 12490648, Harvard University Department of Economics.
  5. Acemoglu, Daron, 1997. "Why Do New Technologies Complement Skills? Directed Technical Change and Wage Inequality," CEPR Discussion Papers 1707, C.E.P.R. Discussion Papers.
  6. Jérôme Vandenbussche & Philippe Aghion & Costas Meghir, 2006. "Growth, distance to frontier and composition of human capital," Journal of Economic Growth, Springer, vol. 11(2), pages 97-127, June.
  7. Jørn Rattsø & Hildegunn E. Stokke, 2009. "Trade barriers to growth in South Africa: Endogenous investment-productivity-trade interaction," DEGIT Conference Papers c014_010, DEGIT, Dynamics, Economic Growth, and International Trade.
  8. Lawrence Edwards & Alberto Behar, 2005. "Trade liberalisation and labour demand within South African manufacturing firms," Working Papers 06, Economic Research Southern Africa.
  9. Francisco Alcalá & Antonio Ciccone, 2004. "Trade and Productivity," The Quarterly Journal of Economics, MIT Press, vol. 119(2), pages 612-645, May.
  10. Francesco Caselli & Wilbur John Coleman II, 2000. "The World Technology Frontier," NBER Working Papers 7904, National Bureau of Economic Research, Inc.
  11. Murray Leibbrandt & Laura Poswell & Pranushka Naidoo & Matthew Welch & Ingrid Woolard, 2005. "Measuring Recent Changes in South African Inequality and Poverty using 1996 and 2001 Census Data," Working Papers 05094, University of Cape Town, Development Policy Research Unit.
  12. Daron Acemoglu, 2003. "Patterns of Skill Premia," Review of Economic Studies, Wiley Blackwell, vol. 70(2), pages 199-230, 04.
  13. Rachel Griffith & Stephen Redding & John Van Reenen, 2000. "Mapping the two faces of R&D : productivity growth in a panel of OECD industries," LSE Research Online Documents on Economics 784, London School of Economics and Political Science, LSE Library.
  14. Johannes Fedderke, 2005. "Technology, Human Capital and Growth," Working Papers 27, Economic Research Southern Africa.
  15. Hertel, Thomas & Hummels, David & Ivanic, Maros & Keeney, Roman, 2007. "How confident can we be of CGE-based assessments of Free Trade Agreements?," Economic Modelling, Elsevier, vol. 24(4), pages 611-635, July.
  16. Liu, Jing & Channing Arndt & Thomas Hertel, 2003. "Parameter Estimation and Measures of Fit in A Global, General Equilibrium Model," GTAP Working Papers 1200, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University.
  17. Janine Aron & John Muellbauer, 2002. "Interest Rate Effects on Output: Evidence from a GDP Forecasting Model for South Africa," Economics Series Working Papers WPS/2002-04, University of Oxford, Department of Economics.
  18. Paul Beaudry & Mark Doms & Ethan Lewis, 2006. "Endogenous Skill Bias in Technology Adoption: City-Level Evidence from the IT Revolution," NBER Working Papers 12521, National Bureau of Economic Research, Inc.
  19. Parente, Stephen L & Prescott, Edward C, 1994. "Barriers to Technology Adoption and Development," Journal of Political Economy, University of Chicago Press, vol. 102(2), pages 298-321, April.
  20. Jess Benhabib & Mark M. Spiegel, 2002. "Human capital and technology diffusion," Working Paper Series 2003-02, Federal Reserve Bank of San Francisco.
  21. Jeffrey D. Sachs & Andrew M. Warner, 1995. "Economic Convergence and Economic Policies," NBER Working Papers 5039, National Bureau of Economic Research, Inc.
  22. Gordon H. Hanson & Ann Harrison, 1999. "Trade Liberalization and Wage Inequality in Mexico," ILR Review, Cornell University, ILR School, vol. 52(2), pages 271-288, January.
  23. Philippe Aghion & Peter Howitt, 2006. "Joseph Schumpeter Lecture Appropriate Growth Policy: A Unifying Framework," Journal of the European Economic Association, MIT Press, vol. 4(2-3), pages 269-314, 04-05.
  24. Peter J. Klenow & Andres Rodriguez-Clare, 2004. "Externalities and Growth," NBER Working Papers 11009, National Bureau of Economic Research, Inc.
  25. Esquivel, Gerardo & Rodriguez-Lopez, Jose Antonio, 2003. "Technology, trade, and wage inequality in Mexico before and after NAFTA," Journal of Development Economics, Elsevier, vol. 72(2), pages 543-565, December.
  26. Daron Acemoglu & Simon Johnson & James A. Robinson, 2001. "Reversal of Fortune: Geography and Institutions in the Making of the Modern World Income Distribution," NBER Working Papers 8460, National Bureau of Economic Research, Inc.
  27. Gavin Cameron, 2000. "The Sun Also Rises: Productivity Convergence Between Japan and the USA," Economics Series Working Papers 45, University of Oxford, Department of Economics.
  28. Abdelhak S. Senhadji & Claudio E. Montenegro, 1999. "Time Series Analysis of Export Demand Equations: A Cross-Country Analysis," IMF Staff Papers, Palgrave Macmillan, vol. 46(3), pages 2.
  29. Lawrence Edwards & Robert Z. Lawrence, 2006. "South African Trade Policy Matters: Trade Performance and Trade Policy," NBER Working Papers 12760, National Bureau of Economic Research, Inc.
  30. Ardington, Cally & Lam, David & Leibbrandt, Murray & Welch, Matthew, 2006. "The sensitivity to key data imputations of recent estimates of income poverty and inequality in South Africa," Economic Modelling, Elsevier, vol. 23(5), pages 822-835, September.
  31. Johannes Fedderke & Yongcheol Shin & Prabhat Vaze, 2003. "Trade, Technology and Wage Inequality in the South African Manufacturing Sectors," ESE Discussion Papers 106, Edinburgh School of Economics, University of Edinburgh.
  32. John Romalis, 2007. "Market Access, Openness and Growth," NBER Working Papers 13048, National Bureau of Economic Research, Inc.
  33. Cameron, Gavin & Proudman, James & Redding, Stephen, 2005. "Technological convergence, R&D, trade and productivity growth," European Economic Review, Elsevier, vol. 49(3), pages 775-807, April.
  34. Zhu, Susan Chun & Trefler, Daniel, 2005. "Trade and inequality in developing countries: a general equilibrium analysis," Journal of International Economics, Elsevier, vol. 65(1), pages 21-48, January.
  35. Robert E. Lucas, Jr., 2007. "Trade and the Diffusion of the Industrial Revolution," NBER Working Papers 13286, National Bureau of Economic Research, Inc.
  36. Howitt, Peter & Aghion, Philippe, 2006. "Appropriate Growth Policy: A Unifying Framework," Scholarly Articles 4554121, Harvard University Department of Economics.
  37. Daron Acemoglu & Jaume Ventura, 2001. "The World Income Distribution," NBER Working Papers 8083, National Bureau of Economic Research, Inc.
  38. L Edwards, 2001. "Globalisation And The Skills Bias Of Occupational Employment In South Africa," South African Journal of Economics, Economic Society of South Africa, vol. 69(1), pages 40-71, 03.
  39. Benhabib, Jess & Spiegel, Mark M., 1994. "The role of human capital in economic development evidence from aggregate cross-country data," Journal of Monetary Economics, Elsevier, vol. 34(2), pages 143-173, October.
  40. Lawrence Edwards, 2004. "A firm level analysis of trade, technology and employment in South Africa," Journal of International Development, John Wiley & Sons, Ltd., vol. 16(1), pages 45-61.
  41. Jørn Rattsø & Hildegunn e. Stokke, 2007. "A Growth Model For South Africa," South African Journal of Economics, Economic Society of South Africa, vol. 75(4), pages 616-630, December.
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