The paper characterises the choice rules that can be implemented when agents are unable to commit themselves not to renegotiate the mechanism.

In the last few years, a new area has emerged in economic theory, which goes under the heading of 'incomplete contracting'. However, almost since its inception, the theory has been under attack for its lack of rigorous foundations. In this paper we evaluate some of the criticisms that have been...

We view a contract as a list of outcomes. Ex ante, the parties commit not to consider outcomes not on the list, i.e., these are "ruled out". Ex post, they freely bargain over outcomes on the list, i.e., the contract specifies no mechanism to structure their choice; in this sense outcomes on the...

There are two parts to this paper. Part One introduces the subject of implementation, and provides applications (in particular, to the theory of contracts). This part is written so as to be accessible to the general reader. Part Two surveys the literature, and is somewhat more formal.

We propose a new bankruptcy procedure. Initially, a firm's debts are cancelled, and cash and non-cash bids are solicited for the "new" (all-equity) firm. Former claimants are given shares, or options to buy shares, in the new firm on the basis of absolute priority. Options are exercised once the...

The paper compares co-operative governance structure to outside ownership. The distinction between the two lies in who has residual rights of control. It is found that a co-operative becomes relatively less efficient as the environment becomes more competitive, and the interests of members...

The thesis of this paper is that human capital is inalienable: it cannot be bought or sold. Control of physical capital proved the means by which one agent influences another. That is, the pattern of property rights over physical assets is important in the determination of incentives. Recent...

Consider an entrepreneur whocneeds to raise funds from an investor, but cannot commit not to withdraw his human capital from the project. The possibility of a default or quit puts an upper bound on the total indebtedness from the entrepreneur to the investor at any date. We characterize the...

We propose a new bankruptcy procedure that makes use of multiple auctions. The procedure is designed to work even when capital markets do not function well (for example, in developing economies, or in economies in transition) - although it can be used in all economies.