You can write a request letter asking for an experience certificate from the company. Can anybody give me format of Resignation letter and Experince certificate?Learn how to write a resignation letter (and what not to include) and then use our example letters as a guide. I will be joining the new company on June 16, 2022, so I kindly request that you please issue me an experience certificate before the date mentioned. Talk to the new company's HR and tell them that your previous company will issue you the experience certificate in 45 days time. Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward.