By on Sep 7, 2024 in | 4 comments « All Events This event has passed. Employment (UI-3/40) October 31, 2018 « Employment (941) Employment » Employment (UI-3/40) Illinois: Business – Employers required to file Form UI-3/40 for unemployment compensation contributions due for the 3rd quarter Add to calendar Google Calendar iCalendar Outlook 365 Outlook Live Details Date: October 31, 2018