Estimating consumer damages in cartel cases

We use consumer panel data to calculate the damage suffered by German consumers due to a detergent cartel that was active between 2002 and 2005 in eight European countries. Applying before-and-after and difference-in-differences estimations we find average overcharges between 6.7 and 6.9 percent and an overall consumer damage of about 13.2 million Euro over the period from July 2004 until March 2005. Under the assumptions that the cartel-induced share on turnover is representative for the entire cartel period and all affected markets, the overall consumer damage would even sum up to about 315 million Euro. Our results further suggest that the retailers reacted to the price increases of the cartel firms via price increases for their own detergent products, resulting in significant umbrella effects. We quantify the damage due to this umbrella pricing to a total of about 7.34 million Euro. With respect to the discussion whether special procedures for bringing collective actions should be available in the EU, our results are important to the extent that we show how consumer associations can use consumer panel data in order to claim damages before national courts and thereby actively fulfill their mandate of consumer protection

The duration of the EC merger control process : determinants and the impact of the 2004 merger regulation reform

The duration of merger proceedings held by competition authorities is an important determinant of the efficiency of the entire merger control process. We use a dataset of 2953 Phase I and 92 Phase II investigations completed by the European Commission (EC) between 1999 and 2008 to examine the key determinants of their duration. Differentiating between authority- and caserelated drivers, we find that while the duration of Phase I investigations largely depends on the type of decision and use of simplified procedure, the duration of Phase II investigations is driven by factors such as industry knowledge, the duration of the preceding Phase I investigation, the origin of the notifying firm or the number of identified relevant markets. We also provide evidence that the significant increase in average duration identified after the 2004 merger regulation reform does not imply a decrease in administrative efficiency, as the probability of indepth investigations was correspondingly reduced

Settlements and appeals in the European Commission's cartel cases : an empirical assessment

The introduction of the European Union (EU) Settlement Procedure in 2008 aimed at promoting the procedural efficiency of cartel investigations by the European Commission (EC). We use a data set consisting of 579 firms groups convicted by the EC for cartelization from 2000 to 2015 to investigate the impact of the settlement procedure on the probability to file an appeal. Based on the estimation of a model of the firm’s decision to appeal in the presettlement era, we subsequently run out-of-sample predictions to estimate the number of hypothetical appeals cases in the settlement era absent the settlement procedure. Our findings of a settlement-induced reduction in the number of appeals of up to 55 percent allow the conclusion that the introduction of the settlement procedure generated substantial additional benefits to society beyond its undisputed key contribution of a faster and more efficient handling of cartel investigations by the EC

Cartel enforcement in the European Union: determinants of the duration of investigations

We provide an empirical assessment of EC cartel enforcement decisions between 2000 and 2011. Following an initial characterisation of our dataset, we especially investigate the determinants of the duration of cartel investigations. We are able to identify several key drivers of investigation length such as the Commission’s speed of cartel detection, the type of cartel agreement, the affected industry or the existence of a chief witness

Split-award auctions and supply disruptions

Problem Definition: We consider a buyer that needs to source a fixed quantity. She faces several potential suppliers that might fail to deliver. The buyer conducts a procurement auction to determine contract suppliers and can choose between single-sourcing and multi-sourcing. If contract suppliers fail to deliver, the buyer tries to source from non-contract suppliers but has little bargaining power due to time pressure. Academic/Practical Relevance: The mitigation of supply risks plays an important role in procurement practice but attracted little attention in the academic analysis of procurement auctions. Academic research on multi-sourcing procurement auction typically analyzes these auctions as stand-alone events. In contrast, we investigate the influence of the auction design on the post-auction market structure and identify an effect favoring multi-sourcing. The insights provide procurement managers guidance for their sourcing decisions. Methodology: We apply game-theoretical methods to analyze a stylized model in which a cost-minimizing buyer needs to source from profit-maximizing suppliers who might fail to deliver. The buyer conducts a procurement auction to determine contract suppliers and can choose between single-sourcing and multi-sourcing. If contract suppliers fail to deliver, the buyer tries to source from a non-contract supplier. We assume that in this situation, the non-contract supplier has almost all the bargaining power. Results: First, we show that in such a setting multi-sourcing does not only reduce the supply risk but might also yield lower prices than single-sourcing. The sourcing decision affects the post-auction market structure such that being a non-contract supplier becomes less attractive in case of multi-sourcing. Second, if suppliers are heterogeneous regarding their disruption probabilities, less reliable suppliers will bid more aggressively than their more reliable competitors causing an adverse selection problem. Furthermore, we show that attracting an additional supplier can be risky as it can increase the auction price and the buyer’s total expenses. Managerial Implications: Our analysis reveals a pro-competitive effect of multi-sourcing. This effect is especially important if the buyer’s value for the item is substantially larger than suppliers’ production costs and for intermediate disruption probabilities

Competition, collusion and spatial sales patterns : theory and evidence

We study competition in markets with significant transport costs and capacity constraints. We compare the cases of price competition and coordination in a theoretical model and find that when firms compete, they more often serve more distant customers that are closer to plants of competitors. By means of a rich micro-level data set of the cement industry in Germany, we provide empirical evidence in support of this result. Controlling for other potentially confounding factors, such as the number of production plants and demand, we find that the transport distances between suppliers and customers were on average significantly lower in cartel years than in non-cartel years

Rent sharing to control non-cartel supply in the German cement market

A challenge for many cartels is avoiding a destabilizing increase in non-cartel supply in response to having raised price. In the case of the German cement cartel that operated over 1991-2002, the primary source of non-cartel supply was imports from Eastern European cement manufacturers. Industry sources have claimed that the cartel sought to control imports by sharing rents with intermediaries in order to discourage them from sourcing foreign supply. Specifically, cartel members would allow an intermediary to issue the invoice for a transaction and charge a fee even though the output went directly from the cartel member’s plant to the customer. We investigate this claim by first developing a theory of collusive pricing that takes account of the option of bribing intermediaries. The theory predicts that the cement cartel members are more likely to share rents with an intermediary when the nearest Eastern European plant is closer and there is more Eastern European capacity outside of the control of the cartel. Estimating a logit model that predicts when a cartel member sells through an intermediary, the empirical analysis supports both predictions

Minority share acquisitions and collusion : evidence from the introduction of national leniency programs

There is a growing concern that minority shareholding (MS) in rival firms may facilitate collusion. To examine this concern, we exploit the fact that leniency programs (LPs) are generally recognized as a shock that destabilizes collusive agreements and study the effect that the introduction of an LP has on horizontal MS acquisitions. Using data from 63 countries over the period 1990-2013, we find a large increase in horizontal MS acquisitions in the year in which an LP is introduced, especially in large rivals. The effect is present however only in countries with an effective antitrust enforcement and low levels of corruption and only when the acquisitions involve stakes of 10%-20%. These results suggest that MS acquisitions may stabilize collusive agreements that were destabilized by the introduction of the LP

Healthy reviews!- Online physician ratings reduce healthcare interruptions

We show that review platforms reduce healthcare interruptions for patients looking for a new physician. We employ a difference-in-differences strategy using physician retirements as a “disruptive shock” that forces patients to find a new physician. We combine insurance claims data with web-scraped physician reviews and highlight a substantial care-gap resulting from a physician’s retirement. We then show that online physician reviews reduce this gap and help patients find a new physician faster. Our results are robust to including a variety of controls and various instruments for the availability of physician reviews, but are not found for patients of nonretiring physicians. By reducing interruptions in care, reviews can improve clinical outcomes and lower costs

Evaluation of best price clauses in hotel booking

We analyze the best price clauses (BPCs) of online travel agents (OTAs) using meta-search price data of more than 45,000 hotels in different countries. Although OTAs apparently have not changed their standard commission rates following the partial ban of BPCs in Europe, we find that BPCs do influence the pricing and availability of hotel rooms across online sales channels. In particular, the abolition of Booking.com’s narrow BPC is associated with the hotels’ direct channel being the price leader more often. Moreover, hotels make rooms more often available at Booking.com when it does not use the narrow BPC