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 an immediate resignation letter with our comprehensive guide, including tips, examples, and a customizable template. In this article, we cover everything you need to know about writing a resignation letter without notice and provide an example to get you started. I am writing to announce my resignation, effective in 24 hours. Download a free immediate effect resignation letter template, easily customizable for your personal situation. Create an Immediate Resignation Letter without a notice period using our free printable templates. Resign with a professionally designed document. When Jerry Tostrud got out of the Army in 1962, the couple moved to Maplewood.