(a) In any case in which the employer or insurance carrier is in default in the payment of compensation due under any award of compensation, for a period of 30 days after the compensation is due and payable, the person to whom such compensation is payable may, within 1 year after such default, apply in writing to the district director for a supplementary compensation order declaring the amount of the default. Upon receipt of such application, the district director shall institute proceedings with respect to such application as if such application were an original claim for compensation, and the matter shall be disposed of as provided for in §702.315, or if agreement on the issue is not reached, then as in §702.316 et seq.