I analyze the use of alternative performance measures using an agency model that incorporates both formal and informal agreements. I show that under the proper combination of verifiable and unverifiable performance measures, the two types of contract complement each other regardless of the...

Tournaments have been objected as resulting from ad hoc restrictions to the contracting problem which are not easily justified. Taking into account that a performance measure might not be verifiable to a third party, however, a restriction to payments which sum up to a constant may be...