++++ 1 . SOCIAL SECURITY FOR MIGRANT WORKERS - SOCIAL SECURITY BENEFITS - RIGHTS CREATED BY THE TREATY - EXERCISE - DETAILED RULES - POWER OF THE COUNCIL ( EEC TREATY, ARTICLE 51 ) 2 . SOCIAL SECURITY FOR MIGRANT WORKERS - SOCIAL BENEFITS - OVERLAPPING - LIMITATION - ENTITLEMENT BY VIRTUE OF NATIONAL LEGISLATION ALONE - REDUCTION - PROHIBITION ( EEC TREATY, ARTICLE 51; REGULATION NO 1408/71 OF THE COUNCIL, ARTICLE 46 ( 3 ))