How to write a resignation letter that's effective immediately? Create an Immediate Resignation Letter without a notice period using our free printable templates.Resign with a professionally designed document. When resigning without notice, your letter should state clearly that the resignation will be effective immediately. Download Pennsylvania Immediate Letter Of Resignation template, modify and send for signing using BoloForms Signature. This letter informs your employee that you must depart right away without the standard two weeks' notice. You can leave the company without notice period after fighting with HR and your manager,but thats not a good thing. The Immediate (Short Notice) Resignation Letter is required when the employee needs and wants to leave the workplace immediately.