Decomposing income polarization and tax-benefit changes across 31 European countries and Europe wide, 2004-2012

Wang, Jinxian and Caminada, Koen and Goudswaard, Kees and Wang, Chen (2015): Decomposing income polarization and tax-benefit changes across 31 European countries and Europe wide, 2004-2012.

Abstract

Polarization is an interesting additional social indicator for analyzing income inequality and poverty across countries, as it captures the phenomenon of ‘clustering around extreme poles’. Rising income polarization can be harmful since it is closely linked to poverty, social exclusion, social tension and social unrest (Brzezinski, 2013). However, so far little literature has been devoted to the changes in income polarization across countries over time, especially within Europe. Moreover, not much is known about whether and to what extent market income and the tax-transfer system contribute to changes of polarization. This paper provides theoretical and empirical insights into a relatively new dimension of income distribution: polarization. Rising income polarization has been observed outside Europe, but within the EU, polarization is relatively unexplored. We therefore broaden the analysis using micro-data from EU-SILC to 28 EU countries and 3 non-EU countries over the period 2004-2012. The paper estimates income polarization and decomposes the estimated polarization by country clusters, and Europe-wide, using a decomposition technique we developed. The main conclusions are: (1) Income polarization is rather stable over the decade in European countries, and Europe-wide. It was rising among West-EU15 countries in the sub-period 2004-2008, but declining afterwards. The opposite development is witnessed for CEE New Member States. Despite the Great Recession we do not find a sizeable increase in income polarization. (2) The causes of changes in polarization between 2004 and 2012 vary to a large extent across countries – no general pattern is found, although polarization was upward driven by market income (mainly capital income), while tax-benefit systems were polarization-reducing.

• Item Type: MPRA Paper
• Language: English
• Keywords: income polarization, inequality, poverty, welfare state reform, EU-SILC
• Subjects: H - Public Economics > H5 - National Government Expenditures and Related Policies > H53 - Government Expenditures and Welfare Programs; H - Public Economics > H5 - National Government Expenditures and Related Policies > H55 - Social Security and Public Pensions; I - Health, Education, and Welfare > I3 - Welfare, Well-Being, and Poverty > I32 - Measurement and Analysis of Poverty

References

Araar, A. (2008): "On the Decomposition of Polarization Indices: Illustrations with Chinese and Nigerian Household Surveys", Cahier de recherche/Working Paper 08-06.

Atkinson, A., and A. Brandolini (2013), ‘On the Identification of the Middle class’, in: J. Gornick and M. Jäntti (eds.), Income Inequality: Economic Disparities and the Middle Class in Affluent Countries, Stanford University Press.

Bönke, T., and C. Schröder (2015), ‘European-wide Inequality in Times of the Financial Crisis’, Discussion Paper School of Business & Economics, 2015/14.

Brandolini, A. (2007), ‘Measurement of Income Distribution in Supranational Entities: The Case of the European Union’, Banca d’Italia Working Paper no. 623

Brandolini, A., and T.M. Smeeding (2007), ‘Inequality: International Evidence’, in: S.N. Durlauf and L.E. Blume (eds.), The New Palgrave Dictionary of Economics, Basingstoke: Palgrave Macmillan: 1013-1021.

Brzezinski, M. (2013), ‘Income Polarization and Economic Growth’, National Bank of Poland Working Paper no. 147. Burgers, J. (1996), ‘No Polarisation in Dutch Cities? Inequality in a Corporatist Country’, Urban Studies 33(1): 99-105.

Caminada, K., and K.P. Goudswaard (2001), 'International Trends in Income Inequality and Social Policy', International Tax and Public Finance 8(4): 395-415.

Cantillon, B., and F. Vandenbroucke. (2014), Reconciling Work and Poverty Reduction. How Successful are European Welfare States?, Oxford University Press.

Castro, J.V. (2003), ‘Regional Convergence, Polarisation and Mobility in the European Union, 1980-1996’, Journal of European Integration 25(1): 73-86.

Datt, G., and M. Ravallion (1992), ‘Growth and Redistribution Components of Changes in Poverty Measures: A Decomposition with Applications to Brazil and India in the 1980s’, Journal of Development Economics 38(2), 275-295.

Deutsch, J., A. Fusco, and J. Silber (2013), ‘The BIP Trilogy (Bipolarization, Inequality and Polarization): One Saga but Three Different Stories’, Economics: The Open-Access, Open-Assessment E-Journal, 7(2013-22): 1-33.

Duclos, J.Y., J. Esteban, and D. Ray (2004), ‘Polarization: Concepts, Measurement, Estimation’, Econometrica 72(6): 1737-1772.

Duro, J. A. (2005), ‘Another Look to Income Polarization Across Countries’, Journal of Policy Modeling 27(9): 1001-1007.

Edward, P. (2006), ‘Examining Inequality: Who Really Benefits from Global Growth?’, World Development 34(10): 1667-1995.

Esteban, J., and D. Ray (1994), ‘On the Measurement of Polarization’, Econometrica 62(4): 819-851.

Esteban, J., and D. Ray (1999), ‘Conflict and Distribution’, Journal of Economic Theory 87(2), 379-415. Esteban, J., and. D. Ray (2011), ‘Linking Conflict to Inequality and Polarization’, American Economic Review 101(4), 1345-1374.

European Commission (2006), Joint Report on Social Protection and Social Inclusion 2006, Luxembourg: Office for Official Publications of the European Communities.

Eurostat (2015), Exchange Rates Database, Brussels.

Eurostat (2015), Income and living conditions Database, Brussels.

Ezcurra, R. (2009), ‘Does Income Polarization Affect Economic Growth? The Case of the European Regions’, Regional Studies 43(2): 267-285.

Ezcurra, R., C. Gil, P. Pascual, and M. Rapun (2005), ‘Inequality, Polarisation and Regional Mobility in the European Union’, Urban Studies 42(7): 1057-1076.

Foster, J.E., and M.C. Wolfson (1992), Polarization and the decline of the middle class: Canada and the U.S., mimeo, Vanderbilt University.

Foster, J., and M. Wolfson (2010), ‘Polarization and the Decline of the Middle Class: Canada and the U.S.’, Journal of Economic Inequality 8(2), 247-273.

Fredriksen, K.B. (2012), ‘Income Inequality in the European Union’, OECD Economics Department Working Papers, No. 952, OECD Publishing.

Gasparini, L., M. Horenstein, E. Molina, and S. Olivieri (2008), ‘Income Polarization in Latin America: Patterns and Links with Institutions and Conflict’, Oxford Development Studies 36(4): 461-484.

Goedemé, T. (2013), ‘How Much Confidence Can We Have in EU-SILC? Complex Sample Designs and the Standard Error of the Europe 2020 Poverty Indicators’, Social Indicators Research 110(1): 89-110.

Goedemé, T., D. Collado, L. Meeusen (2014),’Mountains on the Move: Recent Trends in National and EU-wide Income Dynamics in Old and New EU Member States’, Improve Working Paper 14/05.

Goos, M., A. Manning and A. Salomons (2009), ‘Job Polarization in Europe’, American Economic Review Papers and Proceedings 99 (2), 58-63.

Gottschalk, P., and T.M. Smeeding (1997), ‘Cross-National Comparisons of Earnings and Income Inequality’, Journal of Economic Literature 35(2): 633-687.

Gradín, C. (2000). ‘Polarization and Inequality in Spain: 1973-1991’, Review of Income and Wealth 46(4): 457-474. Hamnett, C. (1996), ‘Social Polarisation, Economic Restructuring and Welfare State Regimes’, Urban Studies 33(8): 1407-1430.

Hills, J., A. Paulus, H. Sutherland, and I. Tasseva (2014), ‘A Lost Decade? Decomposing the Effect of 2001-11 Tax-benefit Policy Changes on the Income Distribution in EU Countries’, ImProve Discussion Paper no. 14/03.

Immervoll, H., and L. Richardson (2011), ‘Redistribution Policy and Inequality Reduction in OECD Countries: What Has Changed in Two Decades’, OECD Social, Employment and Migration Working Papers no. 122.

Jain, L.R., and S.D. Tendulkar (1990), ‘Role of Growth and Distribution in the Observed Change in Headcount Ratio Measure of Poverty: A Decomposition Exercise for India’, Indian Economic Review: 165-205.

Kakwani, N. and K. Subbarao (1990), ‘Rural poverty and Its alleviation in India’, Economic and Political Weekly: A2-A16.

Kenworthy, L., and J. Pontusson (2005), ‘Rising Inequality and the Politics of Redistribution in Affluent Countries’, LIS Working Paper Series 400.

Lambert, P.J., R. Nesbakken, and T.O. Thoresen (2010), ‘On the Meaning and Measurement of Redistribution in Cross-Country Comparisons’, LIS Working Paper Series 532.

Massari, R., P. Naticchioni, and G. Ragusa (2013), ‘Unconditional and Conditional Wage Polarization in Europe’, Neujobs Working Paper no. D3.6.

Morelli, S., J.P. Thompson and T. Smeeding (2015), ‘Post-1970 Trends in Within-country Inequality and Poverty: Rich and Middle Income Countries’, in: A. Atkinson and F. Bourguignon (eds.), Handbook of Income Distribution, Volume 2A, Elsevier.

Motiram, S., and N. Sarma (2014), ‘Polarization, Inequality, and Growth: The Indian Experience’, Oxford Development Studies (ahead-of-print): 1-22.

Nolan, B., W. Salverda, D. Checchi, I. Marx, A. McKnight, I. G. Tóth, and H.G. van de Werfhorst (2014), Changing Inequalities and Societal Impacts in Rich Countries: Thirty Countries’ Experiences, Oxford University Press.

OECD (2008), Growing unequal? Income distribution and Poverty in OECD Countries, Paris: OECD.

OECD (2011), Divided We Stand: Why Inequality Keeps Rising, Paris: OECD.

OECD (2015), In It Together. Why Less Inequality Benefits All, Paris: OECD.

Paul, S. (2004), ‘Income Sources Effects on Inequality’, Journal of Development Economics 73(1): 435-451.

Ravallion, M., and S. Chen (1997), ‘What Can New Survey Data Tell Us about Recent Changes in Distribution and Poverty?’, World Bank Economic Review 11(2), 357-382.

Seshanna, S., and S. Decornez (2003), ‘Income Polarization and Inequality Across Countries: An Empirical Study’, Journal of Policy Modeling 25(4): 335-358.

Van Vliet, O. and C. Wang (2015), ‘Social Investment and Poverty Reduction: A Comparative Analysis across 15 European Countries’, Journal of Social Policy. DOI: 10.1017/S0047279415000070.

Vega, D.L., M.C. Lasso, and A.M. Urrutia (2006), ‘An Alternative Formulation of the Esteban-Gradín-Ray Extended Measure of Polarization’, Journal of Income Distribution, 15(1), 42-54.

Wang, C., K. Caminada, and K.P. Goudswaard (2012), ‘The Redistributive Effect of Social Transfer Programmes and Taxes: A Decomposition across Countries’, International Social Security Review 65(3): 27-48.

Wang, C., K. Caminada, and K.P. Goudswaard (2014), ‘Income Distribution in 20 Countries Over Time’, International Journal of Social Welfare 23: 262-275.

Wang. C, and Wan, G (2014), ‘Income Polarization in PRC: Levels and Changes’, Paper Presented at An Asian Development Bank Seminar on 21st July 2014, Manila, the Philippines.

Whelan, C.T., and B. Maitre (2009), ‘Comparing Poverty Indicators in an Enlarged European Union’, European Sociological Review 26(6): 713-730.

Wolfson, M.C. (1994), ‘When Inequalities Diverge’, The American Economic Review 84(2): 353-358.

Wolfson, M.C. (1997), ‘Divergent Inequalities: Theory and Empirical Results’, Review of Income and Wealth 43(4): 401-421.

World Bank (2013), World Development Indicators. Washington.

Zhang, X, and R. Kanbur (2001), ‘What Difference Do Polarisation Measures Make? An Application to China’, The Journal of Development Studies 37(3): 85-98.

Zhang, Y. and G. Wan (2006), ‘The Impact of Growth and Inequality on Rural Poverty in China’, Journal of Comparative Economics, 34(4), 694-712.