Creates the Illinois Employee Security Act. Establishes a framework for employee discipline and discharge. Prohibits the unjust discharge of an employee. Requires employers to utilize progressive discipline measures. Limits the use of electronic monitoring. Provides for severance pay. Directs the Department of Employment Security to adopt rules and administer the Act. Provides statutory remedies for wrongfully discharged employees and authorizes the recovery of damages. Creates the Wrongful Discharge Enforcement Fund as a special fund in the State treasury. Applies to disciplinary and discharge actions occurring one year after the Act's effective date. Effective January 1, 2022.