Transaction Cost Theory

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Transaction Cost Theory

Rights of ownership (or property rights) to a good or service must be able to be established before a market for that good or service can exist.  In an, as yet, relatively clean-air world, for example, property rights over breathable air can not be established and no market in this good exists.  Transaction costs "are those incurred in enforcing property rights, locating trading partners, and actually carrying out the transaction" (Hyman, 1992, p.134).  If property rights over a good cannot be established, then transaction cost theory is inapropriate.  Work incorporating transaction cost theory has been applied to such issues as the absorption of risk in subcontracting by the Japanese car industry (Asanuma and Kikutani, 1992), problems in the transformation of institutions in the post-Communist period in eastern Europe (Iwanek, 1992; Williamson, 1992) and the design of policies to encourage research and development (R&D) given the problems related to the low appropriability of the results of R&D (Itoh et al, 1991).

Originally a rather narrow, minority-interest specialism within IO, the work of Coase and his followers has thus clearly become in recent years a major concern of the discipline.  In the title of his speech on receipt of the 1991 Nobel Prize for Economics, Coase called this work "The Institutional Structure of Production" (1992).  In this speech Coase was critical of the continuing tendency among some theorists of the firm to ignore the fact that "the efficiency of the economic system depends to a very considerable extent on how these organizations [firms] conduct their affairs".  He was even more surprised at the "neglect of the market or more specifically the institutional arrangements which govern the process of exchange".  He was pleased to acknowledge, however, that institutional factors are beginning to be introduced into mainstream economics (1992, p.714).

What have Coase's contributions been, and how have they been developed in recent years?  His seminal article on "The Nature of the Firm" (1937) argued that it is due to the existence of transaction costs that firms exist.  If it is through the market mechanism that prices determine how factors of production are to be combined to produce what goods, for what markets, then why are organisations necessary?  Coase's answer is that where transactions between individuals would be too difficult, inefficient or expensive, such that an organisation could coordinate them at a lower cost than if they were market transactions, then firms emerge to do this coordination and thereby, in a sense, obviate these transactions by internalising them.  In general,

If the costs of making an exchange are greater than the gains which that exchange would bring, that exchange would not take place and the greater production that would flow from specialization would not be realized (Coase, 1992, p.716).

The internalisation of transactions enables the exploitation of economies of scale or of scope.  The extent to which economies of scale can be exploited determines the size of a firm.  Under what circumstances will transaction costs be lower when internalised than when left to be negotiated in an external market?  This is among the questions asked by Williamson (1985), whose "many significant insights" have given "substance to Coase's suggestion that firms reduce transaction costs" (Alchian and Woodward, 1988, p.65).

Williamson focuses on bounded rationality and opportunism, and asset specificity, in his study of economic organisation.  Bounded rationality refers to the imperfect ability to solve complex problems.  In a game like chess, for example, each player has the same amount of information as the other (there is symmetry of information), but there are so many possibilities that even a brilliant player may not be able to make a fully rational decision.  There is bounded rationality when there is imperfect ability to process the available information, and/or when the information itself is imperfect (i.e. there is uncertainty), both in relation to present and future events.  Opportunism relates to how people will respond to conflicts, given the existence of bounded rationality.  They will behave opportunistically if they act in their self interests, by, for example, finding loopholes in contracts.  If there was unbounded rationality, the potential opportunistic behaviour would be known, and avoided.  Asset specificity refers to assets, involving non-trivial investment, that are specific (or idiosyncratic) to particular transactions (for example skills in an employer-employee contract).  Williamson shows that different combinations of these three elements give rise to different contractual models (Williamson, 1985, p.31).  (This attention to contracts, both in terms of the relations within and between firms, has been a central feature of Williamson's work on transaction cost analysis.)

To illustrate, if there was no opportunism, there would be no need for internalisation.  Without opportunism, Williamson (1985, p.51) argues,

there is no occasion to supplant market exchange by other modes of economic organization if promises to behave in a joint profit-maximizing way are self-enforcing and if sharing rules are agreed to at the outset.

Without opportunism, the transaction would take place within the market, rather than within a hierarchy.  But bounded rationality is a precondition for opportunism.  So, opportunism and bounded rationality are likely to give rise to internalisation.  This, however, is still only part of Williamson's explanation for why and when internal governance will be preferable to market governance.  The third element is asset specificity:  "Market contracting gives way to bilateral contracting, which in turn is supplanted by unified contracting (internal governance) as asset specificity deepens" (Williamson, 1985, p.78).  Asset specificity refers either to physical or human elements in the transaction.  For asset specificity, assets involved in the transaction are, by definition, not freely available for other uses.  There are costs involved in applying them in any other than this particular transaction.  This results in a need for continuity, so that those who have invested in the assets can derive revenues from them.  In terms of an individual adapting skills for a particular firm, for example, once that has been done, this is no longer the kind of "faceless contracting" characteristic of market transactions - the "pairwise identity of the parties" now matters (Williamson, 1985, p.62).  The more specific the asset, the greater the need for continuity, the more likely it will be that internal governance will replace market governance.

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There are important differences between Coase and Williamson.  Williamson himself differentiates his theory from that of Coase as follows (1985, p.78):

                                Coase                        Williamson

Factors favouring                Bounded                Bounded

organisation of                Rationality                Rationality,

production in the                                        Opportunism and

firm rather than                                        Asset

in the market                                                Specificity

While they understand the determinants of transaction costs differently, however, both Coase and Williamson are agreed that minimisation of transaction cost is the basis for the existence of firms.  There is not unanimity on this issue.  Alchian and Demsetz (1972) argued that technological nonseparability is the main factor responsible for the existence of firms.  This refers, for example, to essential cooperation ...

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