Learn how to craft a resignation letter due to health reasonsget tips on what to include and how to write it, plus examples. Simple resignation letter and email message samples to use to quit a job, as well as tips for what to write and how to resign.Describe the Reason. To resign from your position, complete and submit a resignation letter to your supervisor at least two weeks, or as soon as possible, before your last day. I hope this letter finds you well. I apologize for not being able to any notice period because of urgent health conditions that need prolonged treatment and recovery. I hope this letter finds you well. Include the date of your last day of work. I apologize for putting you and your team in an unfavorable position, but the situation needs my immediate attention. In the interest of my health and wellbeing, it is with a heavy heart that I have made the decision to resign from my position.