70 ILCS 1215/14
No officer or employee in the classified civil service of any Park Employees' and Retirement Board Employees' Annuity and Benefit Fund shall be removed, discharged, demoted to an office or place of employment next lower in the line of promotion or suspended for a period of more than thirty (30) days, except for cause upon written charges and after an opportunity to be heard in his or her own defense. Such charges shall be investigated by or before the Civil Service Board or by or before some officer or officers appointed by the board to conduct such investigation. The hearing shall be public and the accused shall be entitled to call witnesses in his or her defense and to have the aid of counsel. The hearing may be postponed or continued with the consent of the Civil Service Board or investigating officer. The finding and decision of the Civil Service Board or of such investigating officer or officers, when approved by the majority of said Civil Service Board, shall be final and shall be certified to the appointing officer, and shall be forthwith enforced by such officer. Nothing in this Act shall limit the power of any officer to suspend a subordinate for a reasonable period not exceeding thirty (30) days. Every such suspension shall be without pay: Provided, however, that the Civil Service Board shall have authority to investigate every such suspension and, in case of its disapproval thereof, it shall have power to restore pay to the employee so suspended. In the course of any investigation provided for in this Act, each member of the Civil Service Board and any officer appointed by it shall have the power to administer oaths and shall have power to secure by its subpoena both the attendance and testimony of witnesses and the production of books and papers. The Civil Service Board shall have the right to strike from the list of civil service employees the name of any person in the classified service who shall fail to report for assignment to a position after certification or for duty after appointment unless such failure to report shall be due to cause permitted by the rules of the Civil Service Board.
70 ILCS 1215/14