How to write a resignation letter that's effective immediately? Don't write anything negative in the resignation letter 1 regardless of circumstances.Just write the letter as you would normally do and be done with. Learn how to write an immediate resignation letter with our comprehensive guide, including tips, examples, and a customizable template. I am resigning my position effective immediately. In the first sentence, clearly state your intention to resign and that your resignation is effective immediately. To write a good and simple resignation letter, greet your manager formally, then state your intent to resign and the date you'll officially depart. Human Resources Officer or their designee at least two (2) weeks prior to the effective date of. A pair of scientific studies confirmed that lead contamination was present in the water supply. AI Resignation Letter Writer.