820 ILCS 175/40
No day and temporary labor service agency shall restrict the right of a day or temporary laborer to accept a permanent position with a third party client to whom the day or temporary laborer has been referred for work or restrict the right of such third party client to offer such employment to a day or temporary laborer. A day and temporary labor service agency may charge a placement fee to a third party client for employing a day or temporary laborer for whom a contract for work was effected by the day and temporary labor service agency not to exceed the equivalent of the total daily commission rate the day and temporary labor service agency would have received over a 60-day period, reduced by the equivalent of the daily commission rate the day and temporary labor service agency would have received for each day the day or temporary laborer has performed work for the day and temporary labor service agency in the preceding 12 months. Days worked at a day and temporary labor service agency in the 12 months preceding the effective date of this amendatory Act of the 94th General Assembly shall be included for purposes of calculating the maximum placement fee described in this Section. However, placement of a day or temporary laborer who is contracted by a day and temporary labor service agency to provide skilled labor shall not be subject to any placement fee cap. For purposes of this Section, a day or temporary laborer who performs "skilled labor" shall apply only where the day and temporary labor service agency performs an advanced application process, a screening process, which may include processes such as advanced testing, and a job interview. No fee provided for under this Section may be assessed or collected by the day and temporary labor service agency when the day or temporary laborer is offered permanent work following the suspension or revocation of the day and temporary labor service agency's registration by the Department.
820 ILCS 175/40