To write a short notice resignation letter, include your position and effective date, explain your reason and express gratitude. The Immediate (Short Notice) Resignation Letter is required when the employee needs and wants to leave the workplace immediately.If you're planning to quit your job here is the compilation of the best resignation letter samples to help you easily draft your resignation letter. Learn how to write a short notice resignation letter with samples. Find a solution to the challenge of resigning on short notice. Start with a clear and concise statement that you are terminating the contract. Mention the contract's title and reference number (if applicable). How to write a resignation letter that's effective immediately? If you're moving out soon, it's important to send a notice to vacate letter. Find out when to send it and see a notice to vacate template.