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How Urbanization Affects Employment and Social Interactions

  • Sato, Yasuhiro


    (Osaka University)

  • Zenou, Yves


    (Stockholm University)

We develop a model where the unemployed workers in the city can find a job either directly or through weak or strong ties. We show that, in denser areas, individuals choose to interact with more people and meet more random encounters (weak ties) than in sparsely populated areas. We also demonstrate that, for a low urbanization level, there is a unique steady-state equilibrium where workers do not interact with weak ties, while, for a high level of urbanization, there is a unique steady-state equilibrium with full social interactions. We show that these equilibria are usually not socially efficient when the urban population has an intermediate size because there are too few social interactions compared to the social optimum. Finally, even when social interactions are optimal, we show that there is over-urbanization in equilibrium.

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Paper provided by Institute for the Study of Labor (IZA) in its series IZA Discussion Papers with number 7914.

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Length: 45 pages
Date of creation: Jan 2014
Date of revision:
Handle: RePEc:iza:izadps:dp7914
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  1. BRUECKNER, Jan K. & THISSE , Jacques-François & ZENOU, Yves, . "Local labor markets, job matching, and urban location," CORE Discussion Papers RP 1545, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  2. Christian Ghiglino & Antonella Nocco, 2012. "When Veblen meets Krugman," DEGIT Conference Papers c017_030, DEGIT, Dynamics, Economic Growth, and International Trade.
  3. Wahba, Jackline & Zenou, Yves, 2005. "Density, social networks and job search methods: Theory and application to Egypt," Journal of Development Economics, Elsevier, vol. 78(2), pages 443-473, December.
  4. Grauwin, Sébastian & Goffette-Nagot, Florence & Jensen, Pablo, 2012. "Dynamic models of residential segregation: An analytical solution," Journal of Public Economics, Elsevier, vol. 96(1), pages 124-141.
  5. Antoni Calvó-Armengol & Thierry Verdier & Yves Zenouc, 2007. "Strong and Weak Ties in Employment and Crime," Post-Print halshs-00754247, HAL.
  6. Pierre M. Picard & Pascal Mossay, 2010. "On spatial equilibria in a social interaction model," Working Papers. Serie AD 2010-14, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie).
  7. Harris, John R & Todaro, Michael P, 1970. "Migration, Unemployment & Development: A Two-Sector Analysis," American Economic Review, American Economic Association, vol. 60(1), pages 126-42, March.
  8. Yannis M. Ioannides & Linda Datcher Loury, 2004. "Job Information Networks, Neighborhood Effects, and Inequality," Journal of Economic Literature, American Economic Association, vol. 42(4), pages 1056-1093, December.
  9. Antoni Calvó-Armengol & Matthew O. Jackson, 2004. "The Effects of Social Networks on Employment and Inequality," American Economic Review, American Economic Association, vol. 94(3), pages 426-454, June.
  10. Calvó-Armengol, Antoni & Patacchini, Eleonora & Zenou, Yves, 2008. "Peer Effects and Social Networks in Education," CEPR Discussion Papers 7060, C.E.P.R. Discussion Papers.
  11. Rosenthal, Stuart S. & Strange, William C., 2004. "Evidence on the nature and sources of agglomeration economies," Handbook of Regional and Urban Economics, in: J. V. Henderson & J. F. Thisse (ed.), Handbook of Regional and Urban Economics, edition 1, volume 4, chapter 49, pages 2119-2171 Elsevier.
  12. Cattell, Vicky, 2001. "Poor people, poor places, and poor health: the mediating role of social networks and social capital," Social Science & Medicine, Elsevier, vol. 52(10), pages 1501-1516, May.
  13. Brueckner, Jan K. & Largey, Ann G., 2008. "Social interaction and urban sprawl," Journal of Urban Economics, Elsevier, vol. 64(1), pages 18-34, July.
  14. Zenou, Yves, 2010. "Search, Migration, and Urban Land Use: The Case of Transportation Policies," CEPR Discussion Papers 8110, C.E.P.R. Discussion Papers.
  15. Robert W. Helsley & William C. Strange, 2007. "Urban interactions and spatial structure," Journal of Economic Geography, Oxford University Press, vol. 7(2), pages 119-138, March.
  16. Patacchini, Eleonora & Zenou, Yves, 2008. "Ethnic Networks and Employment Outcomes," IZA Discussion Papers 3331, Institute for the Study of Labor (IZA).
  17. Judith K. Hellerstein & Melissa McInerney & David Neumark, 2011. "Neighbors and Coworkers: The Importance of Residential Labor Market Networks," Journal of Labor Economics, University of Chicago Press, vol. 29(4), pages 659 - 695.
  18. Edward L. Glaeser, 2010. "Introduction to "Agglomeration Economics"," NBER Chapters, in: Agglomeration Economics, pages 1-14 National Bureau of Economic Research, Inc.
  19. Helsley, Robert W. & Zenou, Yves, 2011. "Social Networks and Interactions in Cities," IZA Discussion Papers 5506, Institute for the Study of Labor (IZA).
  20. Patrick Bayer & Stephen L. Ross & Giorgio Topa, 2004. "Place of Work and Place of Residence: Informal Hiring Networks and Labor Market Outcomes," Working papers 2004-07, University of Connecticut, Department of Economics, revised Oct 2005.
  21. Marcouiller, Douglas & Ruiz de Castilla, Veronica & Woodruff, Christopher, 1997. "Formal Measures of the Informal-Sector Wage Gap in Mexico, El Salvador, and Peru," Economic Development and Cultural Change, University of Chicago Press, vol. 45(2), pages 367-92, January.
  22. MOSSAY, Pascal & PICARD, Pierre M., 2013. "Spatial segregation and urban structure," CORE Discussion Papers 2013019, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  23. Yannis M. Ioannides & Giorgio Topa, 2010. "Neighborhood Effects: Accomplishments And Looking Beyond Them," Journal of Regional Science, Wiley Blackwell, vol. 50(1), pages 343-362.
  24. R. Jason Faberman, 2005. "What’s In a City?: Understanding the Micro-Level Employer Dynamics Underlying Urban Growth," Working Papers 386, U.S. Bureau of Labor Statistics.
  25. repec:oup:restud:v:68:y:2001:i:2:p:261-95 is not listed on IDEAS
  26. Edward L. Glaeser, 2010. "Agglomeration Economics," NBER Books, National Bureau of Economic Research, Inc, number glae08-1, December.
  27. Christopher A. Pissarides, 2000. "Equilibrium Unemployment Theory, 2nd Edition," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262161877, June.
  28. Antonio Ciccone & Robert E. Hall, 1995. "Productivity and the density of economic activity," Economics Working Papers 120, Department of Economics and Business, Universitat Pompeu Fabra.
  29. Marshall, Alfred, 1890. "The Principles of Economics," History of Economic Thought Books, McMaster University Archive for the History of Economic Thought, number marshall1890.
  30. Zhang, Junfu, 2004. "Residential segregation in an all-integrationist world," Journal of Economic Behavior & Organization, Elsevier, vol. 54(4), pages 533-550, August.
  31. Zenou, Yves, 2013. "Spatial versus social mismatch," Journal of Urban Economics, Elsevier, vol. 74(C), pages 113-132.
  32. Yannis M. Ioannides, 2012. "From Neighborhoods to Nations: The Economics of Social Interactions," Economics Books, Princeton University Press, edition 1, volume 1, number 9892.
  33. Maloney, William F, 1999. "Does Informality Imply Segmentation in Urban Labor Markets? Evidence from Sectoral Transitions in Mexico," World Bank Economic Review, World Bank Group, vol. 13(2), pages 275-302, May.
  34. repec:oup:qjecon:v:111:y:1996:i:2:p:507-48 is not listed on IDEAS
  35. Yannis M. Ioannides, 2010. "Neighborhood Effects and Housing," Discussion Papers Series, Department of Economics, Tufts University 0747, Department of Economics, Tufts University.
  36. Yamada, Gustavo, 1996. "Urban Informal Employment and Self-Employment in Developing Countries: Theory and Evidence," Economic Development and Cultural Change, University of Chicago Press, vol. 44(2), pages 289-314, January.
  37. George A. Akerlof, 1997. "Social Distance and Social Decisions," Econometrica, Econometric Society, vol. 65(5), pages 1005-1028, September.
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