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Plant Turnover and the Evolution of Regional Inequalities

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  • Jose Varejao

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  • Anabela Carneiro

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Abstract

Understanding the evolution of earnings inequality is a major research topic with obvious policy implications. While there is widespread belief that institutions are largely responsible for the limited rise in inequality in some European countries, it is also recognised that little or no growth in inequality could be the outcome of market forces alone. However, the role of these market forces in different institutional environments is still not entirely understood. Is the small growth in inequality at the country level reflecting small increases in inequality within and between groups or is it the result of large offsetting changes in different components? Using a large longitudinal matched employer-employee dataset we produce several measures of within and between groups inequality in Portugal for the 1986-1998 period. We focus our attention on changes in the returns to observable characteristics (gender, age and education) of workers and test the hypothesis that these changes reflect developments in the labour market. However, we depart from previous research by shifting focus from the supply side to the demand side of the labour market. Drawing on the results of the by-now large literature on plant turnover we investigate the link between plant entry and exit and changing returns to observable worker characteristics. We argue that Portugal is an interesting case study because, despite very tight regulation and a centralised wage setting system, the level and changes of earnings inequality in recent years make the Portuguese case akin to the US and UK cases rather than to other European cases that share with Portugal similar labour market institutions. Furthermore, high firing costs have previously been identified as the cause for a larger share of employment adjustment occurring in Portugal through plant openings and closings as an alternative to the expansion and contraction of continuing plants. Our analysis is done at the regional level - 28 regions in mainland Portugal (NUTS III) are considered. The advantages of working at the regional level are twofold. First, data for all regions come from the same source - the Personnel Records - which eliminates all issues of comparability that plague many studies dealing with international comparisons. Second, regional comparisons within the same country guarantees a common institutional background which is appropriate given our focus on the role market forces play in shaping patterns of changing earnings inequality. Personnel Records are an administrative survey administered by the Ministry of Employment which is mandatory to all plants with at least one wage earner. Data reported by respondents include characteristics of the plant (location, industry and size), the firm they belong to (location, industry, total employment, annual sales and legal status) and each worker in the plant. Reported worker characteristics include gender, age, education, skill, tenure, earnings and weekly hours of work). Because each plant is assigned a unique invariant identifier, plants can be followed across waves and entries and exits can be identified. On average, the data contains information on 200 thousand plants and 2 million workers per year.

Suggested Citation

  • Jose Varejao & Anabela Carneiro, 2005. "Plant Turnover and the Evolution of Regional Inequalities," ERSA conference papers ersa05p709, European Regional Science Association.
  • Handle: RePEc:wiw:wiwrsa:ersa05p709
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    References listed on IDEAS

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    1. Pedro Portugal & Olivier Blanchard, 2001. "What Hides Behind an Unemployment Rate: Comparing Portuguese and U.S. Labor Markets," American Economic Review, American Economic Association, vol. 91(1), pages 187-207, March.
    2. Chinhui Juhn, 1999. "Wage Inequality and Demand for Skill: Evidence from Five Decades," ILR Review, Cornell University, ILR School, vol. 52(3), pages 424-443, April.
    3. Steven J. Davis & John C. Haltiwanger & Scott Schuh, 1998. "Job Creation and Destruction," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262540932, January.
    4. Julia I. Lane & John C. Haltiwanger & James Spletzer, 1999. "Productivity Differences across Employers: The Roles of Employer Size, Age, and Human Capital," American Economic Review, American Economic Association, vol. 89(2), pages 94-98, May.
    5. Eli Berman & John Bound & Zvi Griliches, 1994. "Changes in the Demand for Skilled Labor within U. S. Manufacturing: Evidence from the Annual Survey of Manufactures," The Quarterly Journal of Economics, Oxford University Press, vol. 109(2), pages 367-397.
    6. Haltiwanger, John C. & Lane, Julia I. & Spletzer, James R., 2007. "Wages, productivity, and the dynamic interaction of businesses and workers," Labour Economics, Elsevier, vol. 14(3), pages 575-602, June.
    7. Lambson, V.E., 1989. "Industry Evolution With Sunk Costs And Uncertian Market Conditions," Working papers 8904, Wisconsin Madison - Social Systems.
    8. Blau, Francine D & Kahn, Lawrence M, 1996. "International Differences in Male Wage Inequality: Institutions versus Market Forces," Journal of Political Economy, University of Chicago Press, vol. 104(4), pages 791-836, August.
    9. Ana Rute Cardoso, 1999. "Firms' Wage Policies and the Rise in Labor Market Inequality: The Case of Portugal," ILR Review, Cornell University, ILR School, vol. 53(1), pages 87-102, October.
    10. Peter Gottschalk & Mary Joyce, 1998. "Cross-National Differences In The Rise In Earnings Inequality: Market And Institutional Factors," The Review of Economics and Statistics, MIT Press, vol. 80(4), pages 489-502, November.
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