Sign up and manage your deferred compensation retirement account. The City of Chicago offers a Section 457 deferred compensation plan.The State of Illinois Deferred Compensation Plan is a supplemental retirement program for State employees. Your 457(b) deferred compensation allows public employees like you to put aside money from each paycheck toward retirement. For more information, call the Deferred Compensation Division at (217) 782-7006 or (800) 442-1300, Ext. 3. Change their investment mix. The City of Chicago offers a Section 457 deferred compensation plan to all employees. Beneficiary Information. If you would like to confirm or update your beneficiary information, please visit our website at ChicagoDeferredComp. Cook County offers a Section 457 deferred compensation plan as a tax-deferred method for you to save for retirement.