How to write a resignation letter that's effective immediately? Download Pennsylvania Immediate Letter Of Resignation template, modify and send for signing using BoloForms Signature.Dear (HR Manager's Name),. It's time to quit the job, and you're not giving two weeks' notice. Here's how to politely write a resignation letter, effective immediately. In this article, we cover everything you need to know about writing a resignation letter without notice and provide an example to get you started. We have prepared detailed guidelines and resignation letter examples for you. Create a free high quality Resignation Letter online now! Pennsylvania has "at will" employment. The Employer shall inform new, transferred, promoted or demoted employees in the bargaining unit that the Union is the exclusive representative.