210 ILCS 49/2-102
The Department shall establish rules governing the minimum staffing levels and staffing qualifications for facilities. In crafting the staffing ratios, the Department shall take into account the ambulatory nature and mental health of the population served in the facilities. Staffing ratios shall be consistent with national accreditation standards in behavioral health from a recognized national accreditation entity as set forth in the definition of "accreditation" in Section 2-102. The rules shall be created for each type of care offered at the facilities and be crafted to address the different type of services offered. The staffing ratios contained in the rules shall specifically list the positions that are to be counted toward the staffing ratio. In no case shall the staffing ratios contained in rule be less than the following ratios:
210 ILCS 49/2-102