Giving a two-week notice letter is a professional way to inform your employer that you intend to resign from your current position. In this article, we explain how to write a twoweek notice letter and we provide templates, tips and examples to help you get started.California's AtWill Employment Law Does Not Require 2 Weeks' Notice. California is an at-will employment state. It's customary to give an employer at least two weeks' notice. Although a verbal resignation is sufficient for many employers, a resignation letter is more formal. Just give them the resignation letter. Dear Mr. Kendricks,. I'll do everything possible to complete my duties during my last two weeks. I'm also happy to help new train team members.