How to write a resignation letter that's effective immediately? Craft your immediate resignation letter with ease using our expert tips and samples to ensure a smooth transition from your job.In the first sentence, clearly state your intention to resign and that your resignation is effective immediately. If your employer is at-will, they can accept your resignation effective immediately. It's NOT considered a firing. Below, you'll find a suggested outline, examples for different scenarios, and tips on writing a resignation letter that works for you. Learn how to write an immediate resignation letter with our comprehensive guide, including tips, examples, and a customizable template. The purpose of this message is to inform you that I am resigning my position at EvilCorp.