To write a short notice resignation letter, include your position and effective date, explain your reason and express gratitude. Learn how to write a short notice resignation letter with samples.Find a solution to the challenge of resigning on short notice. Does the employer have a right to tell you to leave earlier than what your resignation date, as you've already stated that you will be quitting? Can't give two weeks' notice? Here's how to write a short-notice resignation letter with examples and a template included. Please accept this letter as notice of my resignation with effect from today. In accordance with my notice period, my final day will be …………………… Use a concise sentence, such as "This letter is my formal notice that I'm resigning from my position. " State the amount of notice you're providing.