The following are the things to keep in mind when writing an immediate resignation letter: Write the date first. Explain only necessities.In this article, we cover everything you need to know about writing a resignation letter without notice and provide an example to get you started. To write a short notice resignation letter, include your position and effective date, explain your reason and express gratitude. The purpose of this message is to inform you that I am resigning my position at EvilCorp. I would like to inform you of my intention to resign from my position as XXX at XXX effective DATE. By not submitting a resignation letter, you might allow your employer to falsely accuse you. Learn how to write a short notice resignation letter with samples. Find a solution to the challenge of resigning on short notice.