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.How to write a resignation letter that's effective immediately? Due to unforeseen personal reasons, I am unable to provide any notice. I am writing to inform you that I will be resigning from my position as (Title) at (Company Name). 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. A voluntary quit due to the employer's disciplinary methods constitutes neither good cause nor valid circumstances if the discipline is reasonable.