How to write a resignation letter that's effective immediately? Here are steps you can take to still quit properly when you're unable to give notice, including sample resignation letters to send your boss.Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. Download California Immediate Letter Of Resignation template, modify and send for signing using BoloForms Signature. I am writing to give my resignation from (company name), effective (date), two weeks from today. This resignation was a difficult decision to make. Dear (Supervisor's name), I write to confirm that I am resigning from my position as (Job title). I apologize for any inconvenience this may cause. Who should receive my resignation letter? You should give your letter of resignation to your immediate supervisor.