Directive 2014/66/EU of the European Parliament and of the Council of 15 May 2014 on the conditions of entry and residence of third-country nationals in the framework of an intra-corporate transfer

Article 18 – Right to equal treatment
‘2. Intra-corporate transferees shall enjoy equal treatment with nationals of the Member State where the work is carried out as regards:
(a) freedom of association and affiliation and membership of an organisation representing workers or employers or of any organisation whose members are engaged in a specific occupation, including the rights and benefits conferred by such organisations, without prejudice to the national provisions on public policy and public security;‘