Looking to resign with a One Month Notice Resignation Letter? Use our resignation letter template for notice-period roles.To write a short notice resignation letter, include your position and effective date, explain your reason and express gratitude. Are you looking for a professional and formal resignation letter with a 1month notice period? Learn how to write a letter of resignation to quit your job on good terms. Here's what to include in a resignation letter, with examples and templates. I regretfully have to inform you that, after much thought, I have decided to resign and please accept this letter as a formal notice of my resignation. I regretfully have to inform you that, after much thought, I have decided to resign and please accept this letter as a formal notice of my resignation. Close the letter with a brief commitment to continuing to do your job with diligence right up until your last day. I have been offered a better opportunity in the vicinity of my residence.