It's generally best to write in a block format, without indenting. You want to give at least a two weeks' notice.In this article, we cover everything you need to know about writing a resignation letter without notice and provide an example to get you started. When you write a letter of resignation, you have quit. Offering to stay two weeks is the standard in an effort to help transition the work etc. Special Project regular employees have no guarantee of continued employment and may be terminated, without notice, at any time prior to the project ending date.