I realize this resignation only provides short notice, but please understand that due to unforeseen circumstances I am unable to stay longer. If you live in an at-will state, there is no requirement to give any notice for leaving or for your termination.You should be prepared to leave at any time. Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation. The Immediate (Short Notice) Resignation Letter is required when the employee needs and wants to leave the workplace immediately. Concluding Your Resignation Letter: FAQs; Can I resign effective immediately? Can I resign without a notice period? Learn how to write a short notice resignation letter with samples. Find a solution to the challenge of resigning on short notice. DECEDENTS, ESTATES AND FIDUCIARIES. Chapter. 1.