Consumer should submit all complaints through the City's 311 system. File a complaint for workers, Chicago's Labor Laws, Minimum Wage Paid, Sick Leave, File a Complaint, Resources, Free Business Education Webinars.You may file a complaint online or you may download and print one of the following forms. Mail completed forms to the appropriate address below. Please note that there is no charge or fee for filing a complaint. Click here to file a complaint with the Commission Commission Complaint Filing Guide. In order to submit a complaint, please download and print one of the above forms, and follow these instructions (instructions available for download here). Click here to file a complaint online or submit the forms below. Click Here to File a Complaint Online IDOI Help Center Account Registration If you fill out a form on a webpage, you will lose your progress.