How do intrinsic motivations such as fairness and reciprocity influence the efficiency of a principal - multi-agent relationship when joint production in a team is considered? Focusing on moral hazard in teams (Holmström, 1982), this paper reports the results of an experiment designed to...

We show with a laboratory experiment that individuals adjust their moral principles to the situation and to their actions, just as much as they adjust their actions to their principles. We first elicit the individuals' principles regarding the fairness and unfairness of allocations in three...