SOCIAL SECURITY FOR MIGRANT WORKERS - FAMILY ALLOWANCES - COMMUNITY RULES AGAINST OVERLAPPING - SUSPENSION OF ENTITLEMENT TO BENEFITS IN THE STATE OF EMPLOYMENT - BENEFITS PAYABLE UNDER THE LEGISLATION OF THE STATE OF RESIDENCE OF MEMBERS OF THE FAMILY - CONDITIONS - AMOUNT OF BENEFITS PAID IN THE STATE OF RESIDENCE LESS THAN THAT RESULTING FROM THE LEGISLATION OF THE OTHER MEMBER STATE - ENTITLEMENT TO ADDITIONAL BENEFITS ( COUNCIL REGULATION NO 1408/71 , ARTS 73 AND 76 )