This paper integrates elements from the theory of agency, the theory of property rights and the theory of finance to develop a theory of the ownership structure of the firm. We define the concept of agency costs, show its relationship to the ‘separation and control’ issue, investigate the nature of the agency costs generated by the existence of debt and outside equity, demonstrate who bears costs and why, and investigate the Pareto optimality of their existence. We also provide a new definition of the firm, and show how our analysis of the factors influencing the creation and issuance of debt and equity claims is a special case of the supply side of the completeness of markets problem.

This chapter addresses the changing nature of corporate governance in the United Kingdom over recent decades and examines whether these changes have had an impact on the UK market for corporate control. The disappointing outcomes for acquiring company shareholders in the majority of corporate acquisitions, public discontent with some pay deals for top executives and some high profile corporate scandals led in the early 1990s to a call for governance reform. The scrutiny of governance in UK companies has intensified since the publication of the Cadbury Report in 1992 and has resulted in calls for changes in the size, composition and role of boards of directors, in the role of institutional shareholders, the remuneration and appointment of executives, and in legal and accounting regulations. We review the background to these changes and the consequences of the changes since 1990 for governance structures. Finally, we examine whether these changes have affected takeover performance in recent years. Our analysis is specific to the institutional circumstances of the UK although we refer where appropriate to takeover studies in other countries. JEL Classification: G30

This paper is a review of the literature on accounts manipulation in the U.S., but also in several other countries, including Canada, UK, and France. Although we tried to follow a comprehensive approach of this topic, we might have forgotten some references. We make our apologies to the authors who have not been cited. Hervé Stolowy would like to acknowledge the financial support of the Research Center of the HEC School of Management and thanks Etienne Lacam for his research assistance. A REVIEW OF RESEARCH ON ACCOUNTS MANIPULATION Accounts manipulation has been a matter of research, discussion and, even, controversy in