65 ILCS 5/3.1-40-20

(65 ILCS 5/3.1-40-20) (from Ch. 24, par. 3.1-40-20) Sec. 3.1-40-20. Quorum. A majority of the corporate authorities shall constitute a quorum to do business. A smaller number, however, may adjourn from time to time and may compel the attendance of absentees under penalties (including a fine for a failure to attend) prescribed by the council by ordinance. (Source: P.A. 87-1119.)