How to write a resignation letter that's effective immediately? What It Takes to Write A Great Resignation Letter.Create the perfect resignation letter in 30 seconds with our free AI resignation letter generator. How to Write an Immediate Letter of Resignation? California laws say that, in general, you are not required to give your employers two weeks notice – or any notice – prior to quitting or leaving a job. We've rounded up tips and examples for writing a resignation letter that'll help you maintain work relationships long after leaving a company. An Immediate Resignation Letter is a notice that tells a manager or employer of an employee's intention to terminate their employment with immediate effect. The criteria for granting an unpaid LOA are stated in California Department of Human Resources (CalHR) Rule 599.781 and in the Memoranda of Understanding (MOU). It is mutually agreed that in the Los Angeles.