Case C-476/11: Judgment of the Court (Second Chamber) of 26 September 2013 (request for a preliminary ruling from the Vestre Landsret — Denmark) — HK Danmark, acting on behalf of Glennie Kristensen v Experian A/S (Principle of non-discrimination on grounds of age — Charter of Fundamental Rights of the European Union — Article 21(1) — Directive 2000/78/EC — Article 6(1) and (2) — Occupational pension scheme — Increases in the amount of contributions on the basis of age)