Synopsis As Introduced Amends the Illinois Pension Code. Authorizes each pension fund and retirement system to establish and administer an optional retirement plan. Sets forth requirements for the plans. Authorizes each employer that is subject to the Code to make an irrevocable election to participate in the plan. Requires each fund to solicit proposals to provide administrative services and funding vehicles for the plan. Requires those proposals to be assessed using specified criteria. Authorizes employees to direct the investment of their plan balances. Indemnifies fund fiduciaries. Also contains provisions concerning: participation in the plan; establishment of an initial account balance; duplication of service credit; required contributions; termination; vesting; withdrawal; return to service; benefit amounts; and the making of plan elections. Amends the State Mandates Act to require implementation without reimbursement.