Synopsis As Introduced Amends the Illinois Public Labor Relations Act. Modifies the definition of "supervisor" under the Act. Provides that in fire fighter units (rather than new fire fighter units), employees shall consist of fire fighters of the highest rank of company officer and below (currently, highest rank not specified). Provides that a company officer may be responsible for multiple companies or apparatus on a shift, multiple stations, or an entire shift. Provides that there may be more than one company officer per shift. Provides that all other ranks above that of the highest company officer shall be supervisors (currently, highest rank not specified).