Cover -- Contents -- Tables and Figures -- Preface -- I. Introduction -- II. The Problem -- Sociological Approaches to Group Solidarity -- Rational Choice Approaches to Group Solidarity -- III. A Theory of Group Solidarity -- The Extensiveness of Corporate Obligations -- The Probability of Compliance -- IV. The Necessity of Formal Controls -- Prosocial Motivations -- Gaming Strategies Among Rational Egoists -- V. Dependence and Party Solidarity -- Legislators' Dependence on the Party for Re-Election -- Legislators' Dependence on the Party for Patronage -- VI. The Production of Formal Controls -- Rotating Credit Associations -- Insurance Groups -- By-Products of Insurance Groups -- VII. The Limits of Compensation in Capitalist Firms -- Costs of Input Assessment -- Costs of Output Assessment -- The Internal Labor Market as a Quasi-Obligatory Group -- VIII. Economizing on Control Costs in Intentional Communities -- Monitoring Economies -- Sanctioning Economies -- IX. Conclusion -- Markets and Groups -- The Family -- Class and Status Solidarity -- Solidarity in the National Society -- Bibliography -- Index -- A -- B -- C -- D -- E -- F -- G -- H -- I -- J -- K -- L -- M -- N -- O -- P -- R -- S -- T -- U -- V -- W -- Y -- Z.