Learn how to craft a professional resignation letter without notice with our guide. Giving a two week notice isn't required; it is merely a professional courtesy.If your employer is at-will, they can accept your resignation effective immediately. It's NOT considered a firing. 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. The purpose of this message is to inform you that I am resigning my position at EvilCorp. Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation.