Ill. Admin. Code tit. 83, § 335.150
Should the public utility refuse to acquiesce to the independent contractor's request for access to the contract, the authorized agency may file a petition under the Commission's Rules of Practice (83 Ill. Adm. Code 200) seeking a finding by the Commission pursuant to Section 9-102(d)(ii) of the Act that the independent contractor is acceptable to have access to the contract pursuant to this Part. The petition shall name the public utility as the respondent.