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. Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation. Most of the time, it is better to resign from a job formally while giving at least two weeks' notice. A resignation letter need only consist of. It's perfectly legal to quit without notice in the USA. You would likely be coded as ineligible for rehire in the old employer's HR system. You can send a 2-week resignation letter each time you can offer to stay for the 2 weeks notice period. Just keep it short and sweet.