72 Pa. Stat. § 307
The Treasury Department shall carefully audit and examine in accordance with generally accepted auditing standards requisitions that call upon the State Treasurer to draw his warrant for the payment of any money out of any fund of the State Treasury. Warrants shall be drawn by the State Treasurer only after his approval of the requisition.
No money shall be paid from any of the funds of the State Treasury, except upon warrant of the State Treasurer, issued upon requisition pursuant to law except (1) moneys in the State Workmen's Insurance Fund, which may be disbursed by check of the State Treasurer upon requisition of the Secretary of Labor and Industry and (2) moneys in the Surplus Commodities Stamp Fund which may be disbursed by check of the State Treasurer upon requisition of the Secretary of Public Assistance.
72 P.S. § 307