Referral networks and the allocation of talent

Pothier, David (2012): Referral networks and the allocation of talent.

Abstract

We study a model of occupational choice where workers must rely on their social contacts to acquire job vacancy information. Contrary to the existing literature, we allow for worker heterogeneity in terms of their idiosyncratic skill-types. In this case, the allocation of talent (the matching of skills to tasks) becomes a welfare-relevant consideration. A worker’s skill-type determines both his relative cost of specialising in different occupations and his productivity on the job. The model shows that relying on word-of-mouth communication for job search generates both positive externalities (due to improved labour market matching) and negative externalities (due to a poor allocation of talent). Which effect dominates depends on the prop- erties of the job search and productivity functions. Taking into account worker heterogeneity shows that the degree of occupational segregation in competitive labour markets is generally not efficient.

• Item Type: MPRA Paper
• Language: English
• Keywords: Labour Markets; Social Networks
• Subjects: J - Labor and Demographic Economics > J0 - General > J01 - Labor Economics: General; Z - Other Special Topics > Z1 - Cultural Economics ; Economic Sociology ; Economic Anthropology > Z13 - Economic Sociology ; Economic Anthropology ; Social and Economic Stratification; J - Labor and Demographic Economics > J7 - Labor Discrimination > J70 - General

References

[1] K.J. Arrow. What has economics to say about racial discrimination? The Journal of Economic Perspectives, 12(2):91–100, 1998.

[2] R. Benabou. Workings of a city: location, education, and production. The Quarterly Journal of Economics, 108(3):619–652, 1993.

[3] S. Bentolila, C. Michelacci, and J. Suarez. Social contacts and occupational choice. Economica, 77(305):20–45, 2010.

[4] S. Bowles, G.C. Loury, and R. Sethi. Group inequality. Unpublished paper, Santa Fe Institute, 2009.

[5] I.S. Buhai and M.J. Leij. A social network analysis of occupational segregation. Technical report, Tinbergen Institute, 2006.

[6] A. Calvó-Armengol. Job contact networks. Journal of economic Theory, 115(1):191–206, 2004.

[7] A. Calvo-Armengol and M.O. Jackson. The effects of social networks on employment and inequality. The American Economic Review, 94(3):426–454, 2004.

[8] A. Calvó-Armengol and M.O. Jackson. Networks in labor markets: Wage and employment dynamics and inequality. Journal of economic theory, 132(1):27–46, 2007.

[9] A. Calvó-Armengol and Y. Zenou. Job matching, social network and word-of-mouth commu- nication. Journal of Urban Economics, 57(3):500–522, 2005.

[10] M.S. Granovetter. The strength of weak ties. American journal of sociology, pages 1360–1380, 1973.

[11] B.C. Greenwald and J.E. Stiglitz. Externalities in economies with imperfect information and incomplete markets. The quarterly journal of economics, 101(2):229–264, 1986.

[12] Y.C. Kim. Lifetime network externality and the dynamics of group inequality. 2009.

[13] G.C. Loury. The anatomy of racial inequality. Harvard Univ Pr, 2002.

[14] M. McPherson, L. Smith-Lovin, and J.M. Cook. Birds of a feather: Homophily in social networks. Annual review of sociology, pages 415–444, 2001.

[15] J.D. Montgomery. Social networks and labor-market outcomes: Toward an economic analysis. The American economic review, 81(5):1408–1418, 1991.

[16] T.C. Schelling. Dynamic models of segregation. Journal of mathematical sociology, 1(2):143– 186, 1971.

[17] W. Vickrey. Measuring marginal utility by reactions to risk. Econometrica: Journal of the Econometric Society, pages 319–333, 1945.