The comprehensive theoretical literature on mobile termination rates (MTRs) is inconclusive on how the level of MTRs affects overall consumer charges and firms’ profit. In a theoretical model, well suited for econometric implementation, we show that where consumers buy a bundle with included...

According to the new European telecom regulation, incumbent operators are required to provide access to such bottlenecks on fair, reasonable and non-discriminatory terms. We explore different interpretations of this general rule in a model in which the bottleneck can be used by external (to the...

The European Commission recently considered abolishing the notification system and focusing on a regime of ex-post investigations. Our objective is to show that a better understanding of markets can justify this reform. Whe the precision of the Competition Authority's analysis is not high...

In 1997, a new legislation banning below-invoice retail prices came into force in France. Individually negotiated discounts could no longer be passed on to consumers, which is equivalent to allowing industry-wide price oors. The anti-competitive effects of such practices are well-known. The...

Frauds can be explained not only in terms of individual willingness to cheat, but may also be driven by opportunities to behave dishonestly. The audit policy should therefore be different for different categories of agents. This paper focuses on the optimal audit policy when there are two...

This paper reviews a recent strand of the literature on vertical restraints, that has focused on the anti-competitive effects of minimum (and fixed) resale price maintenance in settings with both inter- and intra-brand competition. In particular, we identify a set of situations with...

Council Regulation (EC) 1/2003 came into force in May 2004 and replaced the mandatory notification of agreements by a regime of ex post monitoring. This paper shows that ex post monitoring is the optimal audit regime when the competition authority's probability of error is low. On the other...

Council Regulation (EC) 1/2003 came into force in May 2004 and replaced the mandatory notification of agreements by a regime of ex post monitoring. This paper shows that ex post monitoring is the optimal audit regime when the competition authority's probability of error is low. On the other...

We study information transmission between an informed expert and an uninformed decision-maker when the decision is binary and the expert does not have a systematic bias. Whenever an equilibrium exists where the decision is delegated to the expert, it is ex ante Pareto-dominant. Adding a round of...