30 ILCS 105/9.03
The certification on every State payroll voucher shall be as follows:
"I certify that the employees named, their respective indicated positions and service times, and appropriation to be charged, as shown on the accompanying payroll sheets are true, complete, correct and according to the provisions of law; that such employees are involved in decision making or have direct line responsibility to a person who has decision making authority concerning the objectives, functions, goals and policies of the organizational unit for which the appropriation was made; that the results of the work performed by these employees and that substantially all of their working time is directly related to the objectives, functions, goals, and policies of the organizational unit for which the appropriation is made; that all working time was expended in the service of the State; and that the employees named are entitled to payment in the amounts indicated. If applicable, the reporting requirements of Section 5.1 of the Governor's Office of Management and Budget Act have been met.
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(Date) (Signature)"
For departments under the Civil Administrative Code of Illinois, the foregoing certification shall be executed by the Chief Executive Officer of the department from whose appropriation the payment will be made or his designee, in addition to any other certifications or approvals which may be required by law.
The foregoing certification shall not be required for expenditures from amounts appropriated to the Comptroller for payment of the salaries of State officers.
For appropriations for the Office of the Governor enacted after July 31, 2018 (the effective date of Public Act 100-655) , (1) the foregoing certification shall be required for expenditures from amounts appropriated to the Office of the Governor for payment of salaries of Governor's Office employees and executed by the Governor, or his or her designee, in addition to any other certifications or approvals which may be required by law to be made; and (2) in no event shall salaries of employees of the Office of the Governor be paid from appropriations other than those established for that purpose.
30 ILCS 105/9.03