SOCIAL SECURITY FOR MIGRANT WORKERS - ACCIDENTS AT WORK AND OCCUPATIONAL DISEASES - ASSESSMENT OF DEGREE OF INCAPACITY - TAKING INTO CONSIDERATION OF ACCIDENTS OR DISEASES OCCURRING SUBSEQUENTLY UNDER THE LEGISLATION OF ANOTHER MEMBER STATE - REQUIREMENT - NONE ( REGULATION NO 3 OF THE COUNCIL , ART . 30 ( 1 ); REGULATION NO 1408/71 OF THE COUNCIL , ART . 61 ( 5 ))