The European Union appears to be promoting at the same time both cross-national mobility of workers and an increased role for occupational pensions. There is, however, a potential tension between these two objectives because workers risk losing (some of) their pension rights under an occupational scheme as a consequence of their mobility. After long negotiations, the EU has addressed this issue through a minimum standards Directive. Shortly before the adoption of this Directive, the Court of Justice also delivered an important decision in the same field, in the case of Casteels v British Airways. By analysing the resulting legal framework for safeguarding pension rights under occupational schemes in the context of workers’ mobility, we argue that the application of the case law developed by the Court of Justice in the field of free movement of workers has the potential to offer superior protection compared to the Directive. We also highlight the fact that the present legal framework seems to afford a much fuller protection to the intracompany cross-national mobility of workers employed by multinational companies, while also seemingly favouring mobility for highly specialised workers.