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.Dear Ms. Emily Clarke,. Dear Mr. Clark, I am writing to inform you that I am resigning from my position at Innovate Tech Labs, effective immediately. Learn how to write a resignation letter due to family reasons with our stepbystep guide and sample letters. This letter includes details such as your last day of employment, transition steps, words of gratitude and, optionally, your reasons for leaving. I would like to submit my notice effective immediately, making my last day . This resignation letter is only for an employee who is resigning from a particular position, not the company itself. I believe it is important to leave on amicable terms, so I am committed to completing any pending tasks and ensuring a smooth transition of my responsibilities. I wish you both great success going forward.