Form UI-3/40, Employer's Contribution and Wage Report, is an Illinois state one-page form filed quarterly by each employer subject to the Illinois Unemployment Insurance Act. All employers are to file who have one or more employees located in Illinois who worked any day during each of 20 or more weeks within a calendar year. Local government employers and some non-profit organizations are exempt from filing this form.
This form is issued by the Illinois Department of Employment Security and the latest revision took place in October 2017. A fillable Illinois UI-3/40 Form is available for download below.