ERISA does not require any employer to establish a retirement plan. It only requires that those who establish plans must meet certain minimum standards.State law now requires every Illinois employer with five or more employees to offer their own retirement program or facilitate Secure Choice. The Illinois Secure Choice is a mandatory statesponsored retirement savings program. Find general information about 401(k) plans, the tax advantages of sponsoring the plan and the types of plans available. Learn about the Employee Benefit Plan Audit services offered to companies in Illinois including 401k, 403b and other retirement plan audits. Learn about the Employee Benefit Plan Audit services offered to companies in Illinois including 401k, 403b and other retirement plan audits. STATE ILLINOIS SUPPLEMENTAL SAVINGS PLAN in the form attached hereto, effective. SURS is the retirement administrator for employees in public higher education in the State of Illinois. This proposed rule is intended to facilitate the adoption and administration of MEPs and to expand access to workplace retirement plans.