TY  - JOUR
AU  - Garicano,Luis
AU  - Hubbard,Thomas N.
TI  - Specialization, Firms, and Markets: The Division of Labor Within and Between Law Firms
JF  - National Bureau of Economic Research Working Paper Series
VL  - No. 9719
PY  - 2003
Y2  - May 2003
UR  - http://www.nber.org/papers/w9719
L1  - http://www.nber.org/papers/w9719.pdf
N1  - Author contact info:
Luis Garicano
Departments of Management and Economics and
Centre for Economic Performance
London School of Economics
Houghton Street
London WC2A 2AE
United Kingdom
E-Mail: garicano@lse.ac.uk

Thomas Hubbard
615 Leverone Hall
Kellogg School of Management
Northwestern University
Evanston, IL  60208
Tel: 773/834-4074
Fax: 773/702-0458
E-Mail: t-hubbard@kellogg.northwestern.edu
AB  - What is the role of firms and markets in mediating the division of labor? This paper uses confidential microdata from the Census of Services to examine law firms' boundaries. We find that firms' field scope narrows as market size increases and individuals specialize, indicating that firms' boundaries reflect organizational trade-offs. Moreover, we find that whether the division of labor is mediated by firms differs systematically according to whether lawyers in a particular field are mainly involved in structuring transactions or in dispute resolution. Our evidence is consistent with hypotheses in which firms' boundaries reflect variation in the value of knowledge-sharing or in the costs of monitoring, but not in risk-sharing. Our findings show how the incentive trade-offs associated with exploiting increasing returns from specialization lead the structure of the industry to be fragmented, but highly-skewed.
ER  -