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. Not every company has provision to extend the joining date.It happened to me once when I extended my joining date and they changed it too. In this blog, you'll learn how to write a joining letter. In this article, we discuss how to write a job offer acceptance letter and also present a template and sample letter to help you get started. Just convey your last date after you resign (after carefully reading the offer) and then they will extend the joining date. Like. Download Illinois Employment Acceptance Letter template, modify and send for signing using BoloForms Signature. Inform the HR about this situation. HCL provides extension letter of you are joining late. You would have to resign from or be prevented from joining a union to get or keep the job.