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Cooperation in mergers

European Competition Network

Cooperation in merger control

The EU Merger Working Group

The EU Merger Working Group, established in Brussels in 2010, consists of representatives of the European Commission and the national authorities of the European Union who have responsibility for merger review ("NCAs") together with observers from the NCAs of the European Economic Area.

The objective of the Working Group is to foster increased consistency, convergence and cooperation among EU merger jurisdictions. The group's mandate is to identify areas of possible improvements regarding issues arising in relation to mergers with cross-border impact, and to explore possible solutions, focusing on what is feasible within the existing legal frameworks, and drawing from agency practices and experience.


The Best Practices aim at fostering cooperation and the sharing of information between NCAs in the European Union, for mergers that do not qualify for review by the Commission itself (the one-stop shop review) but require clearance in several Member States ("multiple filing").
Press release.
A consultation on the draft best practices took place in spring 2011.

As set out in the Best Practices, where appropriate, the NCAs encourage the parties to waive confidentiality with regard to mergers subject to cooperation. For this purpose, the format proposed by the ICN model waiver is recommended.

More information on the ICN Model Waiver is available on the international cooperation page.

The Best Practices refer to other relevant documents:

See also