By Phone:
Main Switchboard
(630) 832-2000 or (800) 832-2000
Accounts
Receivable
(630) 832-2012
Communications center Chicago Land
(630) 832-2000
Communications center Rockford
(815) 968-8800
Communications center Indiana
(219) 736-7400
Communications center Michigan
(313) 832-8558
Human Resources Illinois and Indiana
(630) 903-2290
Human Resources Michigan
(586) 778-8258
Or, simply fill out the form: