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How Urbanization Affect Employment and Social Interactions

  • Sato, Yasuhiro
  • Zenou, Yves

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 C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 9805.

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Date of creation: Feb 2014
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Handle: RePEc:cpr:ceprdp:9805
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  1. Wahba, Jackline & Zenou, Yves, 2003. "Density, Social Networks and Job Search Methods: Theory and Application to Egypt," CEPR Discussion Papers 3967, C.E.P.R. Discussion Papers.
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  26. Helsley, Robert & Zenou, Yves, 2011. "Social Networks and Interactions in Cities," Research Papers in Economics 2011:8, Stockholm University, Department of Economics.
  27. 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.
  28. 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.
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