1 . SOCIAL SECURITY FOR MIGRANT WORKERS - COMMUNITY LEGISLATION - FIELD OF APPLICATION RATIONAE MATERIAE - BENEFITS INCLUDED AND BENEFITS EXCLUDED - DISTINCTION ( REGULATION ( EEC ) NO 1408/71 OF THE COUNCIL , ART . 4 ) 2 . SOCIAL SECURITY FOR MIGRANT WORKERS - COMMUNITY LEGISLATION - FIELD OF APPLICATION RATIONAE MATERIAE - SOCIAL AID PENSIONS - INCLUSION - CONDITIONS ( EEC TREATY , ART . 51 ; REGULATION ( EEC ) NO 1408/71 OF THE COUNCIL , ART . 4 ( 4 )) 3 . SOCIAL SECURITY FOR MIGRANT WORKERS - BENEFITS - RESIDENCE CLAUSES - WAIVER - APPLICATION TO SOCIAL AID PENSIONS WHICH MAY BE ASSIMILATED TO OLD-AGE BENEFITS ( REGULATION ( EEC ) NO 1408/71 OF THE COUNCIL , ART . 4 ( 1 ) ( C ) AND ART . 10 ( 1 ), FIRST SUBPARAGRAPH )