In case of default by the employer
in the payment of compensation
due under any award of compensation
for a period of thirty days after the compensation
is due and payable, the person to whom such compensation
is payable may, within one year after such default, make application to the deputy commissioner
making the compensation order or a supplementary order declaring the amount of the default. After investigation, notice, and hearing, as provided in section 919 of this title
, the deputy commissioner shall make a supplementary order, declaring the amount of the default, which shall be filed in the same manner as the compensation order. In case the payment in default is an installment of the award, the deputy commissioner may, in his discretion, declare the whole of the award as the amount in default. The applicant may file a certified copy of such supplementary order with the clerk of the Federal district court for the judicial district in which the employer has his principal place of business or maintains an office, or for the judicial district in which the injury occurred. In case such principal place of business or office or place where the injury occurred is in the District of Columbia, a copy of such supplementary order may be filed with the clerk of the United States District Court for the District of Columbia. Such supplementary order of the deputy commissioner shall be final, and the court shall, upon the filing of the copy, enter judgment for the amount declared in default by the supplementary order if such supplementary order is in accordance with law. Review of the judgment so entered may be had as in civil suits for damages at common law. Final proceedings to execute the judgment may be had by writ of execution in the form used by the court in suits at common law in actions of assumpsit. No fee shall be required for filing the supplementary order nor for entry of judgment thereon, and the applicant shall not be liable for costs in a proceeding for review of the judgment unless the court shall otherwise direct. The court shall modify such judgment to conform to any later compensation order upon presentation of a certified copy thereof to the court.