Customize and Download this "Employee Resignation Letter for Health Reasons". Discover how to craft a professional resignation letter due to illness.A resignation letter due to health and stress lets you inform your employer about your need to step away because of illness or work pressure. Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward. Blank Application Forms. The below forms may be dropped at a secure drop box, at one of our offices, during regular business hours, am to pm.