Learn how to write a resignation letter with a notice period. Notice of the termination must be in writing to the employee prior to the termination. 6. Reinstatement.If you choose to resign from your position at Suffolk University, please give your manager written notice. Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation. A simple resignation letter format includes a resignation statement, an appropriate notice period, and an expression of gratitude. A template letter for employees to use to resign from a job and give notice. You must renew within 6 months of the expiration date. 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. Resignation Letter: How to state your reasons. A notice period is the time between your submitting your letter of resignation and your last working day.