1 . SOCIAL SECURITY FOR MIGRANT WORKERS - PROVISIONS OF THE TREATY - DUTIES OF COUNCIL - LIMITS ( EEC TREATY , ARTICLE 51 ) 2 . SOCIAL SECURITY FOR MIGRANT WORKERS - COMMUNITY RULES - MATTERS TO WHICH THEY APPLY - BENEFITS PROVIDED BY GERMAN LEGISLATION ON SUBSTITUTE PENSIONS ( FREMDRENTENGESETZ ) - EXCLUSION ( REGULATIONS NOS 3 AND 1408/71 OF THE COUNCIL )