620 ILCS 50/47
Any Commissioner may be removed from office by the county board for incompetence, neglect of duty or malfeasance in office. In any proceeding to remove a Commissioner from office, a petition shall be filed with the county board, naming such Commissioner as defendant, setting forth the particular facts upon which the request for removal is based.
The county board shall set the matter for hearing not earlier than 5 days after service shall be had upon the defendant, which service shall be the same as in other civil cases. The county board shall thereupon proceed to a determination of the charges and shall enter an order either dismissing the charges against the Commissioner or removing him from office.
The Commissioner may appeal from the order of the county board to the circuit court of the county wherein he resides at any time within 20 days after the rendition of the county board's order. The appeal shall be perfected by filing a petition with the clerk of the court and serving the chairman or president of the county board with a copy thereof. The petition shall set forth briefly the facts upon which the appeal is based. The case, upon appeal, shall be tried de novo.
The office of Commissioner held by a county board member shall also be deemed vacant when he ceases to be a member of the county board.
620 ILCS 50/47