65 ILCS 5/3.1-30-21
A municipality may appoint, discipline, and discharge part-time police officers. A municipality that employs part-time police officers shall, by ordinance, establish hiring standards for part-time police officers and shall submit those standards to the Illinois Law Enforcement Training Standards Board.
Part-time police officers shall be members of the regular police department, except for pension purposes. Part-time police officers shall not be assigned under any circumstances to supervise or direct full-time police officers of a police department. Part-time police officers shall not be used as permanent replacements for permanent full-time police officers.
Part-time police officers shall be trained under the Intergovernmental Law Enforcement Officer's In-Service Training Act in accordance with the procedures for part-time police officers established by the Illinois Law Enforcement Training Standards Board. A part-time police officer hired after January 1, 1996 who has not yet received certification under Section 8.2 of the Illinois Police Training Act shall be directly supervised.
65 ILCS 5/3.1-30-21