Ill. Admin. Code tit. 56, § 2720.335
The decision of the Board of Review will set forth, in writing, the factual and legal basis for its decision. The Board of Review shall cause a written copy of its decision to be mailed to the parties under Section 2720.1, and/or their representatives under Section 2720.5(c), and to nonparty employers (see Section 2720.205(c)) within the time limits specified in Section 803 of the Act.
(Source: Amended at 43 Ill. Reg. 6385, effective May 14, 2019)