Illinois Statutes Chapter 25. Legislature § 15/1. Joint proclamation; purpose

§ 1. A special session of the General Assembly may be convened at any time by a joint proclamation issued by the Speaker of the House of Representatives and the President of the Senate, stating the purpose of the session and the date and time for the session, and filed with the Secretary of State and by notice to the members as provided in Section 2. Only business encompassed by the purpose stated in the joint proclamation, together with any impeachments or confirmation of appointments, may be transacted at the special session.