Be direct and to the point and, in the first sentence, acknowledge the receipt of their letter of resignation and formally accept it. To write a short notice resignation letter, include your position and effective date, explain your reason and express gratitude.If they're not accepting your resignation try to find out why but let them know the clock started ticking from when you gave them your letter. There isn't a real guideline for what to include in a resignation letter, but typically the briefer the better. I regretfully have to inform you that, after much thought, I have decided to resign and please accept this letter as a formal notice of my resignation. "Learn the essential steps and tips for writing a professional two weeks notice resignation letter. Dear Mr. Smith: Please accept this letter as official notice that I – John Doe – am resigning from the Sales Consultant position in the Sales Department at ABC. 3.4K votes, 818 comments. The day you decide, to quit, go to HR. Don't tell anyone, only HR the day you leave. The worker must then prove that the employer was at fault for the quit because of something the employer did, or allowed to happen, in the workplace.