Background checks in Chicago may include data from Cook County or records at the state level, searching all Illinois courts. Explains the different types of background checks employers can use and what they do with the information.Learn how to conduct fast, compliant Illinois employment background checks in this complete guide for employers and HR managers. Edu or to the general CPS Background Checks line at . We encourage you to reach out to our partner organizations to explore their employment resources. I understand that any employment is conditioned on a background check. A completed application is required when taking written or typing examinations at the Springfield or Chicago test centers.