Judgment of the court (Sixth Chamber) of 8 May 2003 in Case C-171/01 (Reference for a preliminary ruling from the Verfassungsgerichtshof): Wählergruppe "Gemeinsam Zajedno/Birlikte Alternative und Grüne GewerkschafterInnen/UG" (EEC-Turkey Association — Freedom of movement for workers — Article 10(1) of Decision No 1/80 of the Association Council — Prohibition of discrimination as regards conditions of work — Direct effect — Scope — Legislation of a Member State excluding Turkish workers from eligibility for election to a chamber of workers)