We experimentally investigate a simple version of Holmström?s career concerns model in which firms compete for agents in two consecutive periods. Profits of firms are determined by agents? unknown ability and the effort they choose. Before making second-period wage offers firms are informed...

The costs of vertical integration are analyzed within a game-theoretic signaling model. It is shown that a company when being vertically integrated with a supplier may well decide to buy certain components from this supplier even at a lower quality than that offered by external sources. When the...

The impact of transparency on the extent of reciprocal behavior is investigated in a simple repeated gift exchange experiment, where principals set wages and agents respond by choosing effort levels. In addition to the efforts the principals? payoffs are determined by a random component. It is...

We derive a natural definition of responsibility in a formal model where employees care for their career prospects: A superior holds a subordinate responsible for a task, when she announces her beliefs that this subordinate contributes most to this task. We show, that those announced beliefs...

By enriching a principal-agent model it is shown that the introduction of monetary incentives may reduce an agent's motivation. In a first step, we allow for the possibility that some agents stick to unverifiable agreements. The larger the fraction of reliable agents, the lower powered will then...

We discuss a principal-agent model in which the principal has the opportunity to include a non-compete agreement in the employment contract. We show that if the agent faces limited liability and there is an incentive problem the principal prefers not to impose such a clause if and only if the...

A simple principal agent problem is experimentally investigated in which a principal repeatedly sets a wage and an agent responds by choosing an effort level. The principal's payoff is determined by the agent's effort. In a first setting the principal can only set a fixed wage in each period. In...

We discuss a principal-agent model in which the principal has the opportunity to include a non-compete agreement in the employment contract. We show that not imposing such an agreement can be beneficial for the principal as the possibility to leave the firm generates implicit incentives for the...

An explanation for motivation crowding-out phenomena is developed in a social preferences framework. Besides selfish and fair or altruistic types a third type of agents is introduced: These 'conformists' have social preferences if they believe that sufficiently many of the others do too. When...

We study risk-taking behavior in a simple two person tournament in a theoretical model as well as a laboratory experiment. First, a model is analyzed in which two agents simultaneously decide between a risky and a safe strategy and we allow for all possible degrees of correlation between the...