Monitoring technologies and pay for performance contracts are becoming popular solutions to improve public services delivery. Their track record is however mixed. To show why this may be the case, this paper develops a principal agent model where agents' motivations vary and so does the...

The simple trade-off between incentive and risk, which is crucial to the agency problem, is not a sufficient explanation for the ineffectiveness of a specific output-related pay such as the contract system adopted in the US iron and steel industry during the second half of the...