In this article, we explain how to write a twoweek notice letter and we provide templates, tips and examples to help you get started. A one (1) week notice letter is written notification provided to an employer that an employee will no longer be working with the company within seven (7) days.I am writing to inform you that I have made the difficult decision to resign from my position at Phoenix Realtors. Download Arizona Immediate Letter Of Resignation template, modify and send for signing using BoloForms Signature. Simply state something like "Effective this dste, consider this my two week's notice. My last day will be September 1. Dear Sirs: Effective immediately, I am not a member of UFCW Local 99.