You want to give at least a two weeks' notice. California's labor laws do require you to give at least 72 hours' notice if you want your final paycheck at the time you leave.The 72-hour time frame only applies if you were to quit with less than 72 hours notice, which you did not do. It's best practice to provide your employer with a formal written notification of your departure from their organization. Resignation letters are business documents, so open with a formal "Dear" and conclude with an appropriate closing such as "sincerely yours. I'm writing to you to submit my notice and resignation letter. The date you are leaving (if at all possible, give at least two week's notice). Include a forwarding address for mail and correspondence. It's standard to give your employer at least two weeks' notice when you quit your job, but those in accounting should consider giving more notice.