Learn how to craft a resignation letter due to health reasonsget tips on what to include and how to write it, plus examples. Want to quit your job due to health problems?Know how to write the perfect resignation letter due to health issues, with this guide and multiple samples. Immediate resignation due to mental health is allowed. This case is considered as an emergency. You should state the reasons for your departure from work in the resignation letter template, specifying the last working day. Most importantly, what should be included in the resignation letter to an employer? I apologize for leaving you without notice and will submit any necessary medical documentation you request. There are reasons nurses should consider a formal resignation letter.