50 Ill. Adm. Code 4440.40
General Rule
Section 4440.40 General Rule
Beginning January 1, 1993, pursuant to 40 ILCS 5/1-106(b), a
pension fund may, and to the extent required by federal law shall, at the
request of any person entitled to receive an eligible rollover distribution
from the pension fund, pay any portion of that eligible rollover distribution
directly to an eligible retirement plan designated in writing by the person.