TL;DR: In this paper, it is shown that a definition of a firm may be obtained which is not only realistic in that it corresponds to what is meant by a firm in the real world, but is tractable by two of the most powerful instruments of economic analysis developed by Marshall, the idea of the margin and that of substitution.
Abstract: Economic theory has suffered in the past from a failure to state clearly its assumptions. Economists in building up a theory have often omitted to examine the foundations on which it was erected. This examination is, however, essential not only to prevent the misunderstanding and needless controversy which arise from a lack of knowledge of the assumptions on which a theory is based, but also because of the extreme importance for economics of good judgement in choosing between rival sets of assumptions. For instance, it is suggested that the use of the word “firm” in economics may be different from the use of the term by the “plain man.”1 Since there is apparently a trend in economic theory towards starting analysis with the individual firm and not with the industry,2 it is all the more necessary not only that a clear definition of the word “firm” should be given but that its difference from a firm in the “real world,” if it exists, should be made clear. Mrs. Robinson has said that “the two questions to be asked of a set of assumptions in economics are: Are they tractable? and: Do they correspond with the real world?”3 Though, as Mrs. Robinson points out, “more often one set will be manageable and the other realistic,” yet there may well be branches of theory where assumptions may be both manageable and realistic. It is hoped to show in the following paper that a definition of a firm may be obtained which is not only realistic in that it corresponds to what is meant by a firm in the real world, but is tractable by two of the most powerful instruments of economic analysis developed by Marshall, the idea of the margin and that of substitution, together giving the idea of substitution at the margin.
TL;DR: In this paper, a theory of costly contracts is presented, which emphasizes the contractual rights can by of two types: specific rights and residual rights, and when it is costly to list all specific rights over assets, it may be optimal to let one party purchase all residual rights.
Abstract: Our theory of costly contracts emphasizes the contractual rights can by of two types: specific rights and residual rights. When it is costly to list all specific rights over assets in the contract, it may be optimal to let one party purchase all residual rights. Ownership is the purchase of these residual rights. When residual rights are purchased by one party, they are lost by a second party, and this inevitably creates distortions. Firm 1 purchases firm 2 when firm 1's control increases the productivity of its management more than the loss of control decreases the productivity of firm 2's management.
TL;DR: In this paper, the potential of post-contractural apportunistic behavior for improving market efficiency through intra-firm rather than interfirm transactions is examined under the assumption that vertical costs will increase less than contracting costs as specialized assets and appropriable quasi rents increase.
Abstract: The potential of post-contractural apportunistic behavior for improving market efficiency through intrafirm rather than interfirm transactions is examined under the assumption that vertical costs will increase less than contracting costs as specialized assets and appropriable quasi rents increase. Vertical integration protects against the risk of contract cancellation and can create market power which is not generally referred to as monopoly. Contracts used as a alternative provide economically enforceable protection against opportunistic behavior. Solutions to opportunistic behavior problems can include joint ownership of common assets and condominium ownership of services. Economies of scale are major factors in some businesses, such as insurance. The complexities of ownership relations makes it difficult to assign higher costs to either the contract or vertical-integration approach. This suggests that economic analysis should be used to identify which is most advantageous for specific kinds of activities.
TL;DR: In this article, the authors provide a framework for addressing the question of when transactions should be carried out within a firm and when through the market, by identifying a firm with the assets that its owners control.
Abstract: This paper provides a framework for addressing the question of when transactions should be carried out within a firm and when through the market. Following Grossman and Hart, we identify a firm with the assets that its owners control. We argue that the crucial difference for party 1 between owning a firm (integration) and contracting for a service from another party 2 who owns this firm (nonintegration) is that, under integration, party 1 can selectively fire the workers of the firm (including party 2), whereas under nonintegration he can "fire" (i.e., stop dealing with) only the entire firm: the combination of party 2, the workers, and the firm's assets. We use this idea to study how changes in ownership affect the incentives of employees as well as those of owner-managers. Our framework is broad enough to encompass more general control structures than simple ownership: for example, partnerships and worker and consumer cooperatives all emerge as special cases.
TL;DR: In this article, the authors characterize an optimal contract in two cases: when a contract is being used to facilitate trade between two agents who must undertake relationship-specific investments, it is generally not possible to implement the first-best.
Abstract: When drawing up a contract, it is often impracticable for the parties to specify all the relevant contingencies. In particular, they may be unable to describe the states of the world in enough detail that an outsider (the courts) could later verify which state had occurred, and so the contract will be incomplete. The parties can make up for this incompleteness to some extent by building into the contract a mechanism for revising the terms of trade as they each receive information about benefits and costs. One striking conclusion of our analysis is that because the parties can rescind the original contract and write a new one, severe limitations are placed on the form the revisions can take. Moreover, these limitations depend crucially on what means of communication the parties have at their disposal during the revision process. We characterize an optimal contract in two cases. First, when a contract is being used to facilitate trade between two agents who must undertake relationship-specific investments, it is generally not possible to implement the first-best. For a particular example, we are able to confirm the idea that the second-best outcome will involve under-investment. Second, when a contract is being used to share risk, and there are no specific investments, we find that it is possible to implement the first-best provided messages sent between the agents can be publicly verified.