15 ILCS 410/6b

On or after the effective date of this Act, no State disbursing or auditing officer shall make or approve or take part in making or approving any payment for personal service to any person holding a position in the Office of the Comptroller subject to this Act with the exception of those exempt under Section 5b unless the payroll voucher or account of such pay bears the certification of the Director, or of his authorized agent, that each person named therein has been appointed and employed in accordance with the provisions of this law, and rules, regulations and orders thereunder.