How to write a resignation letter that's effective immediately? Leaving a job isn't easy.Learn how to craft a professional resignation letter without notice with our guide. A short resignation letter is the way to go. Include your name, position, the date of resignation and the intended last day of work in the first paragraph. Create an Immediate Resignation Letter without a notice period using our free printable templates. Resign with a professionally designed document. Perhaps this is a template that will help! Please accept this letter as my official two-week notice that I will be leaving the company and my position as salesperson. Use a formal business format for the actual letter itself.