Case C-290/12: Judgment of the Court (Eighth Chamber) of 11 April 2013 (request for a preliminary ruling from the Tribunale di Napoli — Italy) — Oreste Della Rocca v Poste Italiane SpA (Social policy — Directive 1999/70/EC — Framework Agreement on fixed-term work concluded by ETUC, UNICE and CEEP — Clause 2 — Scope of application of the Framework Agreement — Temporary employment business — Supply of temporary workers to a user undertaking — Successive fixed-term employment contracts)