By a well-known argument, securities holders do not directly benefit from risk-reducing corporate diversification when they can replicate this difersification on their own. Some have argued that corporate diversification may be of value, or can otherwise be explained by, the agency relationship...

This paper shows how fixed costs can play an important role in determining the structure of organizations. Applications considered include layoffs, downsizing, heterogeneity among firms, and the structure of hierarchies. Agency problems as a source of fixed costs are also considered.