70 ILCS 2605/4.24
No person shall in any room or building occupied for the discharge of official duties by any officer or employee in the sanitary district, solicit orally or by written communication delivered therein, or in any other manner, or receive any contribution of money or other thing of value, for any party or political purpose whatever, from any member of the classified civil service. No officer, agent, clerk, or employee under the government of any such sanitary district, who may have charge or control of any building, office or room occupied for any purpose of said municipal corporation shall permit any person to enter the same for the purpose of therein soliciting or delivering written solicitations for or receiving from, or giving notice to any member of the classified civil service of any political assessments.
70 ILCS 2605/4.24