To write a short notice resignation letter, include your position and effective date, explain your reason and express gratitude. Use a one week's notice letter template to inform your current employer that you plan to resign within seven days.The Immediate (Short Notice) Resignation Letter is required when the employee needs and wants to leave the workplace immediately. Learn how to write a short notice resignation letter with samples. Find a solution to the challenge of resigning on short notice. Please accept this letter as notice of my resignation with effect from today. In accordance with my notice period, my final day will be …………………… It is legal for you to give a one day notice, or no notice at all, unless you are contractually obliged to do so. This could include no notice at all. A lease termination letter is a written notice that lets a landlord know a tenant plans to end the lease and move out.