The following are the things to keep in mind when writing an immediate resignation letter: Write the date first. Explain only necessities.Learn how to write an immediate resignation letter with our comprehensive guide, including tips, examples, and a customizable template. If you live in an at-will state, there is no requirement to give any notice for leaving or for your termination. You should be prepared to leave at any time. An at will employee may be terminated at any time and without cause. Download Pennsylvania Immediate Letter Of Resignation template, modify and send for signing using BoloForms Signature. Your employer can fire you at any time for any reason with no notice, but you can also quit at any time for any reason with no notice. Upvote Key Actions Before Employee Separation. There are no upcoming events at this time.