Every year, the Commission submits, in line with Protocol No 2 to the Treaties, a report on the application of the principles of subsidiarity and proportionality. Since 2005, the Commission also publishes an annual report on its relations with national Parliaments. Given the important role that national Parliaments play in monitoring the application of the principles of subsidiarity and proportionality, the Commission decided to merge both reports in 2018.

Annual reports on the application of the principles of subsidiarity and proportionality and relations with national Parliaments (from 2018)

Annual report 2017 on relations between the European Commission and national Parliaments

Annual report 2016 on relations between the European Commission and national Parliaments

Annual report 2015 on relations between the European Commission and national Parliaments

Annual report 2014 on relations between the European Commission and national Parliaments

Annual report 2013 on relations between the European Commission and national Parliaments

Annual report 2011 on relations between the European Commission and national Parliaments

Annual report 2012 on relations between the European Commission and national Parliaments

Annual report 2010 on relations between the European Commission and national Parliaments

Annual report 2009 on relations between the European Commission and national Parliaments

Annual report 2008 on relations between the European Commission and national Parliaments

Annual report 2007 on relations between the European Commission and national Parliaments

Annual report 2006 on relations between the European Commission and national Parliaments

Annual report 2005 on relations between the European Commission and national Parliaments