The State of Illinois Deferred Compensation Plan is a supplemental retirement program for State employees. Download any State of Illinois Deferred Compensation Plan form now using Acrobat Reader.These forms allow data to be typed into the form and saved. This voluntary plan, called the SURS Deferred Compensation Plan (DCP), provides members an avenue to save more and generate additional income in retirement. Questions regarding §457 maximums and refunds should be directed to Louisiana Deferred Compensation at (225) 926-8082 or toll free at (800) 937-7604. Find your employer's plan. Tax Social Security, Comments. The SURS Deferred Compensation 457 Plan (also known as the SURS DCP) is an investment plan available to all actively contributing SURS members. Deferred compensation contribution limit increased.