Illinois Statutes Chapter 40. Pensions § 5/1-106. Payment of distribution other than direct

(a) The board of trustees of any retirement fund or system operating under this Code may, at the written direction and request of any annuitant, solely as an accommodation to the annuitant, pay the annuity due the annuitant to a bank, savings and loan association, or any other financial institution insured by an agency of the federal government, for deposit to the account of the annuitant, or to a bank, savings and loan association, or trust company for deposit in a trust established by the annuitant for his or her benefit with that bank, savings and loan association, or trust company. The annuitant may withdraw the direction at any time.

(b) Beginning January 1, 1993, each pension fund or retirement system operating under this Code may, and to the extent required by federal law shall, at the request of any person entitled to receive a refund, lump-sum benefit, or other nonperiodic distribution from the pension fund or retirement system, pay the distribution directly to any entity that (1) is designated in writing by the person, (2) is qualified under federal law to accept an eligible rollover distribution from a qualified plan, and (3) has agreed to accept the distribution.