Using standard as well as recently developed univariate and bivariate count data models, this paper analyzes the determinants of workplace accidents using a firm data set for Germany. Given the tight system of public workplace safety regulation, introduced partly as early as in 1869, and the...

One cornerstone of current attempts to reform the German public health care system by introducing private insurance schemes is the assumption that economic incentives play an important role in individual decision-making about using medical help. This hypothesis is examined for the case of demand...

Various markets ban or heavily restrict monetary transfers. This is often motivated by moral concerns. However, it appears to be disputable whether the observed restrictions on transfers are the appropriate market design answer to these concerns. Instead of exogenously restricting transfers on a...

We investigate the claim that auctions in procurement are detrimental to the buyer- seller relationship, which is expressed by less trust by the buyer and more oppor- tunistic behavior by the supplier after the sourcing. To do so, we compare exper- imentally a standard auction and a...

We consider the contracting problem of a principal who faces an agent with private information and cannot commit to not renegotiate a chosen contract. To analyze this problem, we propose an infinite horizon negotiation protocol in which renegotiation is frictionless, executed without delay and...

We analyze the Moral Hazard problem, assuming that agents are inequity averse. Our results differ from conventional contract theory and are more in line with empirical findings than standard results. We find: First, inequity aversion alters the structure of optimal contracts. Second, there is a...

We compare two commonly used mechanisms in procurement: auctions and negotiations. The execution of the procurement mechanism is delegated to an agent of the buyer. The agent has private information about the buyer's preferences and may collude with one of the sellers. We provide a precise...

We analyse a 2-period competitive insurance market which is characterized by the simultaneous presence of standard moral hazard and adverse selection with regard to consumer time preferences. It is shown that there exists an equilibrium in which patient consumers use high effort and buy a...

Gesundheitsökonomen nehmen Stellung zu den „Eckpunkten zu einer Gesundheitsreform“ der Koalitionsparteien vom 4. Juli 2006.

Recently, the combinatorial clock auction has become more and more common in the auctioning of telecommunication licenses. Although the auction design is complex, the promise is that bidding becomes simple - truthtelling is close to optimal. We show that this claim is too strong. The auction...