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Oliver Hart

Bio: Oliver Hart is an academic researcher from Harvard University. The author has contributed to research in topics: Incomplete contracts & Debt. The author has an hindex of 73, co-authored 198 publications receiving 56222 citations. Previous affiliations of Oliver Hart include University of Essex & Massachusetts Institute of Technology.


Papers
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Journal ArticleDOI
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.

8,850 citations

Journal ArticleDOI
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.

5,057 citations

MonographDOI
TL;DR: In this article, a general model of the firm is developed, and then the financial structure of firms, debt collecting and bankruptcy is analyzed in greater depth, and the authors contribute to contact theory as developed in economic analysis.
Abstract: This essay contributes to contact theory as it has been developed in economic analysis, particularly in the context of the firm. It develops a general model of the firm, and then analyzes in greater depth the financial structure of firms, debt collecting and bankruptcy.

3,585 citations

Posted Content
TL;DR: In this paper, an incomplete contracting or property rights approach is proposed to understand firms' financial decisions, in particular, the nature of debt and equity (why equity has votes and creditors have foreclosure rights); the capital structure decisions of public companies; optimal bankruptcy procedure; and the allocation of voting rights across a company's shares.
Abstract: This book provides a framework for thinking about economic instiutions such as firms. The basic idea is that institutions arise in situations where people write incomplete contracts and where the allocation of power or control is therefore important. Power and control are not standard concepts in economic theory. The book begins by pointing out that traditional approaches cannot explain on the one hand why all transactions do not take place in one huge firm and on the other hand why firms matter at all. An incomplete contracting or property rights approach is then developed. It is argued that this approach can throw light on the boundaries of firms and on the meaning of asset ownership. In the remainder of the book, incomplete contacting ideas are applied to understand firms' financial decisions, in particular, the nature of debt and equity (why equity has votes and creditors have foreclosure rights); the capital structure decisions of public companies; optimal bankruptcy procedure; and the allocation of voting rights across a company's shares. The book is written in a fairly non-technical style and includes many examples. It is aimed at advanced undergraduate and graduate students, academic and business economists, and lawyers as well as those with an interest in corporate finance, privatization and regulation, and transitional issues in Eastern Europe, the former Soviet Union, and China. Little background knowledge is required, since the concepts are developed as the book progresses and the existing literature is fully reviewed.

3,150 citations

Journal ArticleDOI
TL;DR: In this paper, the authors study privately and socially optimal corporate charters under the alternative assumptions of competition and monopoly in the market for corporate control, and analyze exclusionary devices that can be built into the corporate charter to overcome this free-rider problem.
Abstract: It is commonly thought that a widely held corporation that is not being run in the interest of its shareholders will be vulnerable to a takeover bid. We show that this is false, since shareholders can free ride on the raider's improvement of the corporation, thereby seriously limiting the raider's profit. We analyze exclusionary devices that can be built into the corporate charter to overcome this free-rider problem. We study privately and socially optimal corporate charters under the alternative assumptions of competition and monopoly in the market for corporate control.

2,905 citations


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Posted Content
TL;DR: This paper examined legal rules covering protection of corporate shareholders and creditors, the origin of these rules, and the quality of their enforcement in 49 countries and found that common law countries generally have the best, and French civil law countries the worst, legal protections of investors.
Abstract: This paper examines legal rules covering protection of corporate shareholders and creditors, the origin of these rules, and the quality of their enforcement in 49 countries. The results show that common law countries generally have the best, and French civil law countries the worst, legal protections of investors, with German and Scandinavian civil law countries located in the middle. We also find that concentration of ownership of shares in the largest public companies is negatively related to investor protections, consistent with the hypothesis that small, diversified shareholders are unlikely to be important in countries that fail to protect their rights.

14,563 citations

Journal ArticleDOI
TL;DR: In this article, the authors examined legal rules covering protection of corporate shareholders and creditors, the origin of these rules, and the quality of their enforcement in 49 countries and found that common-law countries generally have the strongest, and French civil law countries the weakest, legal protections of investors, with German- and Scandinavian-civil law countries located in the middle.
Abstract: This paper examines legal rules covering protection of corporate shareholders and creditors, the origin of these rules, and the quality of their enforcement in 49 countries. The results show that common-law countries generally have the strongest, and Frenchcivil-law countries the weakest, legal protections of investors, with German- and Scandinavian-civil-law countries located in the middle. We also find that concentration of ownership of shares in the largest public companies is negatively related to investor protections, consistent with the hypothesis that small, diversified shareholders are unlikely to be important in countries that fail to protect their rights.

13,984 citations

Journal ArticleDOI
TL;DR: In this paper, a firm that must issue common stock to raise cash to undertake a valuable investment opportunity is considered, and an equilibrium model of the issue-invest decision is developed under these assumptions.

13,939 citations

Posted Content
TL;DR: The authors surveys research on corporate governance, with special attention to the importance of legal protection of investors and of ownership concentration in corporate governance systems around the world, and presents a survey of the literature.
Abstract: This paper surveys research on corporate governance, with special attention to the importance of legal protection of investors and of ownership concentration in corporate governance systems around the world.

13,489 citations

Journal ArticleDOI
TL;DR: Corporate Governance as mentioned in this paper surveys research on corporate governance, with special attention to the importance of legal protection of investors and of ownership concentration in corporate governance systems around the world, and shows that most advanced market economies have solved the problem of corporate governance at least reasonably well, in that they have assured the flows of enormous amounts of capital to firms, and actual repatriation of profits to the providers of finance.
Abstract: This article surveys research on corporate governance, with special attention to the importance of legal protection of investors and of ownership concentration in corporate governance systems around the world. CORPORATE GOVERNANCE DEALS WITH the ways in which suppliers of finance to corporations assure themselves of getting a return on their investment. How do the suppliers of finance get managers to return some of the profits to them? How do they make sure that managers do not steal the capital they supply or invest it in bad projects? How do suppliers of finance control managers? At first glance, it is not entirely obvious why the suppliers of capital get anything back. After all, they part with their money, and have little to contribute to the enterprise afterward. The professional managers or entrepreneurs who run the firms might as well abscond with the money. Although they sometimes do, usually they do not. Most advanced market economies have solved the problem of corporate governance at least reasonably well, in that they have assured the flows of enormous amounts of capital to firms, and actual repatriation of profits to the providers of finance. But this does not imply that they have solved the corporate governance problem perfectly, or that the corporate governance mechanisms cannot be improved. In fact, the subject of corporate governance is of enormous practical impor

10,954 citations