Please schedule a Local Office: In-Person Appointment or call us at 1-855-457-2489. Your 457(b) deferred compensation allows public employees like you to put aside money from each paycheck toward retirement.The City of Chicago offers a Section 457 deferred compensation plan. Please call 855-457-2665 for assistance. Upon retirement or separation from employment, Cook County plan participants may elect to defer a portion of. Participating in the Deferred Compensation Plan can help supplement retirement planning, and will not reduce any other University benefits. Submit an original or certified copy of the death certificate and a copy of your driver's license, with this form.