How to write a resignation letter that's effective immediately? Download Arizona Immediate Letter Of Resignation template, modify and send for signing using BoloForms Signature.Dear Sirs: Effective immediately, I am not a member of UFCW Local 99. Please accept this letter as a notice of my resignation. I am writing to inform you that I have made the difficult decision to resign from my position at Phoenix Realtors. We've rounded up tips and examples for writing a resignation letter that'll help you maintain work relationships long after leaving a company. I wish you both great success going forward. In the meantime, please let me know if I can assist you in any way during this transition period. Sincerely,.