Case C-128/12: Order of the Court (Sixth Chamber) of 7 March 2013 (request for a preliminary ruling from the Tribunal do Trabalho do Porto — Portugal) — Sindicato dos Bancários do Norte, Sindicato dos Bancários do Centro, Sindicato dos Bancários do Sul e Ilhas, Luís Miguel Rodrigues Teixeira de Melo v BPN — Banco Português de Negócios SA (Reference for a preliminary ruling — Article 53(2) of the Rules of Procedure — Charter of Fundamental Rights of the European Union — National legislation establishing salary reductions for certain public sector workers — Failure to implement European Union law — Clear lack of jurisdiction of the Court of Justice)