A voluntary retirement savings plan that provides quality investment options, investment educational programs and related services. The State of Illinois Deferred Compensation Plan is a supplemental retirement program for State employees.This Investment Options Guide is intended to provide you with an overview of the investment options under the New York State Deferred Compensation Plan. If you participate in a deferred compensation plan, you can contribute a portion of your salary to a retirement account. Employers have elected to be covered, and which is called the IPPFA Deferred. NACo's Deferred Compensation Program has helped more than 1.5 million county employees and retirees save for and live comfortably in retirement.