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Competition Policy with Optimally Differentiated Rules Instead of "Per se Rules vs. Rule of Reason"

Arndt Christiansen () and Wolfgang Kerber ()
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Arndt Christiansen: Faculty of Business Administration and Economics, Philipps Universitaet Marburg

No 200606, Marburg Working Papers on Economics from Philipps-Universität Marburg, Faculty of Business Administration and Economics, Department of Economics (Volkswirtschaftliche Abteilung)

Abstract: Abstract: Both in US antitrust and EU competition policy a development to a broader appli-cation of rule of reason instead of per se rules can be observed. In the European discussion the attempt to base competition policy on a "more economic approach" is mainly viewed as im-proving the economic analysis in the assessment of specific cases. In this paper it is shown from a general law and economics perspective that the application of rules instead of focus-sing on case-by-case analyses can have many advantages (less regulation costs, rent seeking and knowledge problems), although an additional differentiation of rules through a deeper assessment can also have advantages in regard to the reduction of decision errors of type I and II. After introducing the notion of a continuum of more or less differentiated rules, we show - based upon law and economics literature upon the optimal complexity of rules - in a simple model that a competition rule is optimally differentiated, if the marginal reduction of the sum of error costs (as the marginal benefit of differentiation) equals the marginal costs of differen-tiation. This model also allows for a more detailed analysis of the most important determi-nants of the optimal degree of rule-differentia¬tion. From this law and economics perspective, competition policy should consist mainly of (more or less differentiated) rules and should only rarely rely on case-by-case analysis. Therefore the main task of a "more economic ap-proach" is to use economics for the formulation of appropriate competition rules.

Keywords: Competition Policy; European Competition Law; Rule of Reason (search for similar items in EconPapers)
JEL-codes: K K L (search for similar items in EconPapers)
Pages: 26 pages
Date: 2006
New Economics Papers: this item is included in nep-com, nep-eec, nep-law and nep-reg
References: View references in EconPapers View complete reference list from CitEc
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http://www.uni-marburg.de/fb02/makro/forschung/gel ... istiansen-Kerber.pdf First version, 2006 (application/pdf)

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Persistent link: https://EconPapers.repec.org/RePEc:mar:volksw:200606

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