70 ILCS 1710/14
All funds received for the use of the Commission shall be deposited in the name of the Commission by the treasurer, in a depository approved by the Commission and shall be withdrawn or paid out only by check or draft upon the depository signed by any two of such Commissioners or employees of the Commission as may be designated for this purpose by the Commission, provided further that funds appropriated to the Commission by the General Assembly shall not be expended except in accordance with a formal planning program and budget which has been reviewed and approved by the Department of Commerce and Economic Opportunity . All persons so designated shall execute bonds with corporate sureties approved by the Commission in the same manner and amount as required of the treasurer, and in such amount as determined by the Commission.
In case any person whose signature appears upon any check or draft, issued pursuant to this Act, ceases (after attaching his signature) to hold his office before the delivery thereof to the payee, his signature nevertheless shall be valid and sufficient for all purposes with the same effect as if he had remained in office until delivery thereof.
70 ILCS 1710/14