55 ILCS 5/2-5019

The county board shall, at its first meeting in the month following the month in which county board members are elected, choose one of its members as speaker for a term of 2 years. A speaker may be removed, with or without cause, upon a motion adopted by an affirmative vote of four-fifths of the county board. Upon adoption of a motion to remove the speaker: (i) the speaker position becomes vacant and the former speaker's compensation shall be prorated to the date the motion was approved; and (ii) a new speaker shall be elected at the next regularly scheduled county board meeting. A speaker removed under this Section maintains his or her status as a member of the county board.