It's time to quit the job, and you're not giving two weeks' notice. Here's how to politely write a resignation letter, effective immediately.How to write a resignation letter that's effective immediately? Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation. Simply prepare your letter of resignation and deliver it in person. You don't owe them an explanation. The way you do this is: 1. Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward.