This paper shows that offering a fixed wage maximizes the principal's welfare when the agent needs to engage in multitask and that the effort needed to achieve one task can be induced by suppressing the effort needed for the other task, in the absence of externalities. In the existing...

Labour contracts tend to be more complicated than one simple short or long-term contract which is the basis of previous studies. Combinations of different length contracts become essential when principals expect to maximize not only verifiable outputs but also observable but unverifiable...