55 ILCS 5/1-6005

The county board shall determine whether any claim against the county should be allowed, disallowed or in the alternative the board may by resolution require the submission of a verified affidavit by the claimant stating that the several items therein mentioned are just and true, and the services charged therein, or articles furnished, as the case may be, were rendered or furnished as therein charged, and that the amount claimed is due and unpaid after allowing all just credits. The county board may make cash advances to all county officials and employees for travel and related expenses if sufficient funds have been budgeted and are available in the appropriate county fund.