Principled Silence or Mere Silence on Principles? The Role of the EU Charter's Principles in the Case Law of the Court of Justice

Historical background of the inclusion of social rights in the Charter of Fundamental Rights - Distinction between rights and principles - Similarities between the conditions for direct effect and the criteria for distinguishing between Charter rights and principles - Implications of this distinction for the possibilities of judicial review - Reluctance of the ECJ to explicitly deal with the distinction until Glatzel, as illustrated by its earlier judgments in Dominguez and AMS.