Learn how to draft a professional resignation acceptance letter after receiving official notice from an employee. Customize and streamline your HR processes.But what if you are an HR, and need to deal with a job resignation letter and the notice period? This doesn't make much sense. Why do you need an acknowledgement of a resignation for? Template for an employer to acknowledge an employee's resignation. I wish to inform you that your resignation has been accepted. This document provides guidance on writing an effective resignation letter. It explains that a resignation letter should thank the employer for the opportunity. Since when do resignations have to be approved?