How to write a resignation letter that's effective immediately? I need to prioritize my health, so I am resigning immediately." Expression of gratitude. I am resigning my position effective immediately. Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward. Another choice you have is to do it in a single email, send the resignation to your manager, and include HR on copy. Jim Arkens Resignation Letter. A fourth fire was reported early Wednesday in Coachella, in Riverside County. The causes were under investigation.