How to write a resignation letter that's effective immediately? This letter informs your employee that you must depart right away without the standard two weeks' notice.Any time I write a letter of resignation, I start with a template. You can find many online. Create an Immediate Resignation Letter without a notice period using our free printable templates. Resign with a professionally designed document. Use this resignation letter example to inform your employer that you need to resign immediately and will not be able to give two weeks' notice. I am writing to formally resign from my position as a Chef at Lavender Hotel. My last working day will be October31 2025. Saving of existing contracts. 7.