Learn how to write an immediate resignation letter with our comprehensive guide, including tips, examples, and a customizable template. Download Pennsylvania Immediate Letter Of Resignation template, modify and send for signing using BoloForms Signature.How to write a resignation letter that's effective immediately? In the opening paragraph, clearly state that you are resigning from your position. Dear (HR Manager's Name),. (For example, "I regret to inform you that I will be resigning from my position, effective immediately. Most states in the U.S., including Pennsylvania and New Jersey, are "atwill" employment states. Remember to provide a written date for leaving the position, just like when you resign from a job. It is with regret that I have to resign my position as a nurse practitioner in the cardiac unit at UPMC East immediately. Set forth in the written contract or written policy.