Cities, school districts and other local government bodies must grant leaves of absence to employees called to military duty for as long as the person serves.
Blagojevich says about 4,000 Illinois residents are on active military duty.
The person on leave does not lose seniority and other benefits continue.
The law takes effect immediately. It already applies to state employees.
Viewers with disabilities can get assistance accessing this station's FCC Public Inspection File by contacting the station with the information listed below. Questions or concerns relating to the accessibility of the FCC's online public file system should be directed to the FCC at 888-225-5322, 888-835-5322 (TTY), or email@example.com.