Learn how to craft a resignation letter due to health reasonsget tips on what to include and how to write it, plus examples. Dear Ms. Margie King,​​ I trust this message finds you in good health.Discover how to craft a professional resignation letter due to illness. "Due to health reasons, I find it necessary to resign to focus on my wellbeing. 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. The purpose of this message is to inform you that I am resigning my position at EvilCorp. How can you write a letter of resignation due to illness if your employer does not allow absenteeism and will not excuse your absence?