++++ 1. Preliminary rulings - Jurisdiction of the Court - Act of Accession 1972 - Protocol No 3 on the Channel Islands and the Isle of Man - Reference to the Court - National court or tribunal within the meaning of Article 177 - Courts and tribunals of the Isle of Man (EEC Treaty, Art. 177; Treaty of Accession 1972, Art. 1(3); Act of Accession 1972, Art. 158 and Protocol No 3) 2. Accession of new Member States to the Communities - Act of Accession 1972 - Protocol No 3 on the Channel Islands and the Isle of Man - Free movement of workers - Not applicable to the Isle of Man - Equal treatment of Community nationals - Whether applicable to the right to take up employment - Requirement of a work permit laid down as a general rule - Whether permissible - Obligation on the part of the Isle of Man authorities to grant Community nationals the same treatment as that granted to Manxmen by the United Kingdom - None (EEC Treaty, Art. 227(5)(c); Act of Accession 1972, Protocol No 3, Arts 1 and 4)