Social security for migrant workers ° Old-age and death insurance ° Award of benefits ° Concurrent award under the legislation of all the Member States in which the worker has been covered as soon as the claim for benefits is lodged ° Non-observance by the worker of the obligation to submit his claim to the institution in the Member State in which he resides ° No effect (Council Regulations No 1408/71, Art. 44(2), and No 574/72, Art. 36(1) and (4))