AUTHORITY: Implementing Section 5-10(a)(i) of the Illinois Administrative Procedure Act [5 ILCS 100] and authorized by Section 2105-15(7) of the of the Civil Administrative Code of Illinois (Department of Financial and Professional Regulation Law) [20 ILCS 2105].DEPARTMENT OF FINANCIAL AND PROFESSIONAL REGULATION
a) Any party or witness may be called as an adverse witness. In such a case, examination of the witness will be allowed as if under cross-examination.
b) Upon a showing that a witness was called in good faith, and that the party calling him is surprised by his testimony, examination of the witness may proceed as if under cross-examination, and the testimony of the witness may be impeached by prior statements, or otherwise.