Specify your job title and the healthcare institution from which you're resigning. A professional resignation letter should also state the date you're leaving.Explore why a good resignation letter is important and how to write it, and check out our free resignation letter examples. Discover how to craft a professional resignation letter due to illness. Here's a resignation letter template you can use to ensure a smooth transition process and avoid losing your connections as you move forward. But how do you transition from a fulltime job to a PRN job? Most importantly, what should be included in the resignation letter to an employer? It helps you resign professionally, promote a smooth transition, and put your health first.