(a) Money credited to the account of this Commonwealth in the Unemployment Trust Fund by the Secretary of the Treasury of the United States of America pursuant to section 903 of the Federal Social Security Act (42 U.S.C. § 1103) may not be requisitioned from this Commonwealth's account or used except for the payment of benefits and for the payment of expenses incurred for the administration of this act and this State's system of public employment offices. Such money may be requisitioned pursuant to subsection (b) of section 601¹ for the payment of benefits. Such money may also be requisitioned and used for the payment of expenses incurred for the administration of this act and this State's system of public employment offices but only pursuant to a specific appropriation by the Legislature and only if the expenses are incurred and the money is requisitioned after the enactment of an appropriation law which:

(b) For purposes of subsection (a)(3), amounts obligated for administrative purposes pursuant to an appropriation or paid out for benefits shall be chargeable against transferred amounts at the exact time the obligation is entered into. The appropriation, obligation and expenditure or other disposition of money appropriated under this subsection shall be accounted for in accordance with standards established by the United States Secretary of Labor.

(c) Money appropriated as provided herein for the payment of expenses of administration shall be requisitioned as needed for the payment of obligations incurred under such appropriation and, upon requisition, shall be deposited in the Employment Security Administration Fund from which such payments shall be made. Money so deposited shall, until expended, remain a part of the unemployment fund and, if it will not be expended, shall be returned promptly to the account of this Commonwealth in the Unemployment Trust Fund.