++++ 1 . Social security for migrant workers - Community rules - Persons covered - National of a non-member country who lost the nationality of a State before it became a member of the Community - Excluded ( Council Regulation No 1408/71, Art . 2(1 ) ) 2 . Social security for migrant workers - Principle of equal treatment - Not applicable to a person entitled to a social security benefit who is excluded from the scope of Regulation No 1408/71 ( EEC Treaty, Art . 7; Council Regulation No 1408/71, Art . 3(1 ) ) 3 . Social security for migrant workers - Benefits - Residence clauses - Waiver - Limits - Residence in a Member State - National legislation making payment of a retirement pension to persons residing in a non-member country conditional upon the requirement of reciprocity ( EEC Treaty, Art . 51(b ); Council Regulation No 1408/71, Art . 10 )