Hierarchies, Specialization, and the Utilization of Knowledge: Theory and Evidence from the Legal Services Industry

61 Pages Posted: 3 May 2004 Last revised: 5 Jul 2010

See all articles by Luis Garicano

Luis Garicano

IE Business School; Centre for Economic Policy Research (CEPR)

Thomas N. Hubbard

Northwestern University - Department of Management & Strategy; National Bureau of Economic Research (NBER)

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Date Written: April 2004

Abstract

What role do hierarchies play with respect to the organization of production and what determines their structure? We develop an equilibrium model of hierarchical organization, then provide empirical evidence using confidential data on thousands of law offices from the 1992 Census of Services. The driving force in the model is increasing returns in the utilization of acquired knowledge. We show how the equilibrium assignment of individuals to hierarchical positions varies with the degree to which their human capital is field-specialized, then show how this equilibrium changes with the extent of the market. We find empirical evidence consistent with a central proposition of the model: the share of lawyers that work in hierarchies and the ratio of associates to partners increases as market size increases and lawyers field-specialize. Other results provide evidence against alternative interpretations that emphasize unobserved differences in the distribution of demand or 'firm size effects,' and lend additional support to the view that a role hierarchies play in legal services is to help exploit increasing returns associated with the utilization of human capital.

Suggested Citation

Garicano, Luis and Hubbard, Thomas N., Hierarchies, Specialization, and the Utilization of Knowledge: Theory and Evidence from the Legal Services Industry (April 2004). NBER Working Paper No. w10432. Available at SSRN: https://ssrn.com/abstract=532991

Luis Garicano

IE Business School ( email )

Calle MarĂ­a de Molina, 11
Madrid, 28006
Spain

Centre for Economic Policy Research (CEPR)

London
United Kingdom

Thomas N. Hubbard (Contact Author)

Northwestern University - Department of Management & Strategy ( email )

Kellogg School of Management
2001 Sheridan Road
Evanston, IL 60208
United States

National Bureau of Economic Research (NBER)

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

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