Leaving a job isn't easy. In this article, we discuss what to include in a professional resignation letter and we share examples of resignation letters you can use for reference.Dear Sirs: Effective immediately, I am not a member of UFCW Local 99. A resignation letter is a way to formally end your employment and provide details such as an end date and contact information. State that you wish to quit and include your final day of work. 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. State that you wish to quit and include your final day of work. Over the next (amount of time left at company), I will ensure as much as I can that my projects are complete. Please accept this letter as official notification of my resignation from my position as Floor Manager, effective immediately.