The main hypothesis underlying this article is that although arbitrators are not formally part of national justice systems, they have dealt with questions of EU fundamental rights and the European rule of law standards for quite some time, at least formally since the landmark CJEU judgment in Eco Swiss in 1999. In fact, in all forms of arbitration, be it national or international, taking place in or across (Member) States daily and not necessarily concerning the application by arbitrators of EU law stricto sensu, arbitrators can be seen as guardians of many crucial procedural guarantees that increase parties’ access to justice and advance the European rule of law, or so we wish to argue.

This article is an exploratory piece. That is, it combines the format of the state-of-the-art review with the format of conference proceedings through which we present the main activities of the DG Justice TRIIAL project concerning arbitration. Our main goal is three-fold: (1) to advance the discussion on the relationship between the European rule of law and arbitration, (2) to present the main findings stemming from research and training activities within the TRIIAL training workshops on arbitration, and (3) to formulate future research and practical questions on the topic at hand.