The Secretary of Labor is authorized to receive, adjudicate according to law, and provide for the payment of any claim filed by any person specified in section 101(a) of the Act entitled “An Act to provide benefits for the injury, disability, death, or enemy detention of employees of contractors with the United States, and for other purposes”, approved December 2, 1942, as amended [42 U.S.C. 1701(a)], or by the legal representative of any such person who may have died, for the amount by which (1) the total sum which would have been payable to such person by his employer (not including any payments for overtime), if such person’s contract of employment had been in effect and he had been paid under it for the entire period during which he was entitled to receive benefits under section 101(b) of such Act [42 U.S.C. 1701(b)], exceeds (2) the entire amount creditable to such person’s account for such period under the provisions of such section plus any amounts paid to such person by such employer for such period or recovered by such person in any legal action against such employer based upon such person’s right against such employer for such period under the contract of employment, including payments in settlement of the liability of the employer arising under or out of such contract. No claim shall be allowed to any person under the provisions of this section unless such person executes a full release to the employer and to the United States in respect to the liability of the employer arising under or out of the contract of employment, except liability for workmen’s compensation benefits under the Act of August 16, 1941, as amended [42 U.S.C. 1651 et seq.] or detention or other benefits paid under the Act of December 2, 1942, as amended [42 U.S.C. 1701 et seq.]. Any claim allowed under the provisions of this section shall be certified by the Secretary of Labor to the Secretary of the Treasury for payment out of the War Claims Fund established by section 4110 of this title.