Williamson é um destacado teórico do novo institucionalismo. Fez doutorado pela Carnegie-Mellon University, em 1963, e é, atualmente, professor de "Economics and Law" da Universidade da Califórnia, em Berkeley.
É o criador do conceito de "mecanismos de governo" (Mecanismos de controle de governo) que se refere aos sistemas de controle dos riscos associados a qualquer transação. Seus campos principais de pesquisa são: economia das instituições, estratégia das organizações, burocracia, política e custos de transação.
Obras
"Managerial Discretion and Business Behavior", 1963, AER
The Economics of Discretionary Behavior: Managerial objectives in a theory of the firm, 1964.
"Economics as an Anti-Trust Defense: The welfare trade-offs", 1968, AER
Corporate Control and Business Behavior: An inquiry into the effects of organization form on enterprise behavior, 1970.
"The Vertical Integration of Production: market failure considerations", 1971, AER
"Markets and Hierarchies: Some elementary considerations", 1973, AER
Markets and Hierarchies: Analysis and antitrust implications, 1975.
"Franchise Bidding for Natural Monopolies: in general and with respect to CATV", 1976, Bell JE
"Transaction Cost Economics: The governance of contractual relations", 1979, J Law Econ
"The Economics of Organization: The transaction cost approach", 1981, American J of Sociology
"Credible Commitments: Using hostages to support exchange", 1983, AER
The Economic Institutions of Capitalism, 1985.
"Vertical Integration and Related Variations on a Transaction- Cost Economics Theme", 1986, en Stiglitz and Mathewson, editores, New Developments in the Analysis of Market Structure
"Transaction Cost Economcs", 1987, JEBO
"Economics and Sociology: Promoting a dialog", 1988, en Farkas and England, editores, Industries, Firms and Jobs
"A Comparison of Alternative Approaches to Economic Organization", 1990, J of Institutional and Theoretical Economics
Organization theory : from Chester Barnard to the present and beyond., 1990.
"The Logic of Economic Organization", 1991, en Williamson y Winter, editores, Nature of the Firm
"Economic Institutions: Spontaneous and intentional governance", 1991, Journal of Law, Economics and Organization
"Markets, hierarchies, and the modern corporation: an unfolding perspective", 1993, JEBO
The Mechanisms of Governance, 1996.