This paper invites European authorities to take measures to facilitate the transition to an Open Access model that takes into account the specificities of the various academic fields (natural sciences vis-à-vis humanities and social sciences) but does not impose additional burdens on researchers. The Open Access model is also being considered at the national level. It is not yet clear whether the national and the European initiatives will be aligned. Some coordination between the various institutions involved in fostering the Open Access model appears necessary. ALLEA would be pleased to work with the European Commission and other institutions to further elaborate an OA policy and to develop more detailed guidelines.