Learn how to craft a resignation letter due to health reasonsget tips on what to include and how to write it, plus examples. Clark, I hope this letter finds you well.I am writing to officially tender my resignation from my position at Secure Trust Bank due to health reasons. Here are examples of resignation letters for different levels and professions, each tailored to a specific personal reason. Learn how to write a resignation letter due to family reasons with our stepbystep guide and sample letters. For example, if your reason for leaving is a health issue, you can write "due to illness" in your letter. Discover how to craft a professional resignation letter due to illness. It's best to tell your boss that you're moving on to the next step in your career "facetoface or over video call," with at least two weeks' notice.