To write a short notice resignation letter, include your position and effective date, explain your reason and express gratitude. A two (2) weeks notice resignation letter is the most common letter used when notifying an employer of an official resignation.Please accept this as my formal letter of resignation. Learn how to write a short notice resignation letter with samples. Find a solution to the challenge of resigning on short notice. I hope a two-week notice is sufficient for you to find a replacement for me. If I can help to train my replacement or tie up any loose ends, please let me know. Do you ought to write a resignation letter? Your resignation email's subject line should say your name and that you're resigning. Pick a resume template.