While employees often give two weeks notice as a courtesy, there is no law requiring you to give any notice. Learn how to craft a professional resignation letter without notice with our guide.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. If you have an offer from another firm and can start immediately, is it appropriate to hand in a resignation letter without providing two weeks' notice? Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation.