Preamble: ‘(25) This Directive aims to facilitate mobility of intra-corporate transferees within the Union (‘intra-EU mobility’) and to reduce the administrative burden associated with work assignments in several Member States. For this purpose, this Directive sets up a specific intra-EU mobility scheme whereby the holder of a valid intra-corporate transferee permit issued by a Member State is allowed to enter, to stay and to work in one or more Member States in accordance with the provisions governing short-term and long-term mobility under this Directive. [...]‘
Article 15 - Freedom to choose an occupation and right to engage in work