Article 4
1. Provisions laid down by law, regulation or administrative action of the Member States which restrict by number or percentage the employment of foreign nationals in any undertaking, branch of activity or region, or at a national level, shall not apply to nationals of the other Member States. 2. When in a Member State the granting of any benefit to undertakings is subject to a minimum percentage of national workers being employed, nationals of the other Member States shall be counted as national workers, subject to Directive 2005/36/EC of the European Parliament and of the Council of 7 September 2005 on the recognition of professional qualifications ( 5 ) .