This paper analyzes the optimal contract for a consumer to procure a credence good from an expert when (i) the expert might misrepresent his private information about the consumer’s need, (ii) the expert might not choose the requested service since his choice of treatment is non-observable,...

Riordan and Sappington (JET, 1988) show that in an agency relationship in which the agent's type is correlated with a public ex post signal, the principal may attain first best (full surplus extraction and efficient output levels) if the agent is faced with a lottery such that each type is...

The problem of designing tournament contracts under limited liability and alternative performance measures is considered. Under risk neutrality, only the best performing agent receives an extra premium if the liability constraint becomes binding. Under risk aversion, more than one prize is...