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. If they decide to terminate your employment immediately, that's up to them.But don't use your vacation as part of your two week notice period. Can you use vacation time for 2 weeks' notice? Managers may be able to deny PTO requests from employees who resign with a 2-week notice letter. It is very common to give notice immediately before or after a vacation period. It is not ideal as it can cause coverage shortages, but it is far from uncommon. By Brad Nakase, Attorney. There's also the option to turn your "2 weeks notice" into a "3 weeks notice": state your intention to leave 2 weeks before your PTO starts. The employee's handbook may mention how to put in your two weeks notice of resignation.