Contracts often reward inefficient tasks and are not enforced ex post. We provide a new explanation based on the relationship between explicit contracts and implicit agreements, distinguishing the ex-ante decision to sign a contract from the ex-post decision whether to apply it. We show that it...

This paper studies gender interactions within hierarchical organizations using a large data set on the duration of Italian municipal governments elected between 1993 and 2003. A municipal government can be viewed as a hierarchy, whose stability over time depends on the degree of cooperation...