It's time to quit the job, and you're not giving two weeks' notice. Here's how to politely write a resignation letter, effective immediately.Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation. Do not give a resignation letter if you are being let go as you won't be able to claim unemployment. Please accept this letter as my formal resignation from (Position Name) at (Company Name), effective two weeks from today, (Current Date). Ask your employer to give in writing the reasons for asking you to resign. Resignation letters in Florida should generally contain a specific reason for the resignation and a forwarding address. This letter is to notify you that I will no longer be able to fulfil my duties as a (your role) at your company, effective from (date). I need to prioritize my health, so I am resigning immediately. " Expression of gratitude.