How to write a resignation letter that's effective immediately? It's legal to just leave the job, in the sense that the Feds won't be kicking down your door because you didn't give notice.Learn how to craft a professional resignation letter without notice with our guide. To resign from your position, complete and submit a resignation letter to your supervisor at least two weeks, or as soon as possible, before your last day. It's not going to hurt you op. It's a necessary formality. Can I Resign Without Providing any Notice Period? You have no protection in florida unless it is in your handbook for a resignation being accepted effective immediately. Understand termination letter and separation notice requirements for each applicable U.S. state with this helpful guide to stay compliant. There is no legal obligation to provide notice of quitting a job or providing any kind of resignation letter.