I am writing to confirm my acceptance of your employment offer on April 20 and to tell you how delighted I am to be joining XYZ Corporation in Chicago. Download Illinois Employment Acceptance Letter template, modify and send for signing using BoloForms Signature.Download a free Job Offer Acceptance Letter template for Word to use when you want to accept a job offer. All Illinois Courts must accept these forms. In the header of your letter, include your contact information, such as your full name, address, phone number, and email address. Mail to State of Illinois, P.O. Box 19138, Springfield, IL 62794-9138 or b. All forms are ADA accessible, and you can handwrite or type into the PDF form to fill it out. Forms on this website are PDFs with fillable fields. Forms should be downloaded to your computer before filling in the fields. The Illinois Department of Revenue (IDOR) sends letters and notices to request additional information and support for information you report on your tax return.