Ill. Admin. Code tit. 26 § 125.197
Any writing or record, whether in the form of any entry in a book or otherwise, made as a memorandum or record of any act, transaction, occurrence or event, except as otherwise privileged, shall be admissible as evidence of the act, transaction, occurrence or event, if made in the regular course of any business, and if it was the regular course of the business to make the memorandum or record at the time of the act, transaction, occurrence or event or within a reasonable time afterwards. All other circumstances of the making of the writing or record, including lack of personal knowledge by the entrant or maker, may be shown to affect its weight, but shall not affect its admissibility. The term "business", as used in this Section, includes business, profession, occupation and calling of every kind, and shall specifically include campaigns for nomination or election or campaigns in support of or opposition to any referendum or question of public policy.
Ill. Admin. Code tit. 26, § 125.197
Amended at 35 Ill. Reg. 2351, effective February 4, 2011