Learn why you must write a job acceptance letter and how to write one with a professional touch through our tips and free samples. The first thing you should put on your job acceptance letter is the date.Include it underneath the header close to the top of your letter. I write to you today to request that you bestow upon me the title of king. Writing a job acceptance letter is a sign of professionalism. Check out these job acceptance letter samples to write a perfect acceptance letter State how eager you are to start working for the company. Mention the proposed start date.