Innovate: Your role is old news, so you take your career in a different direction with new responsibilities — and opportunities. Time frame: Clearly state your last planned day of employment.Provide contact information. Include an email address and phone number where you can be reached once you officially leave the job. This does not need to be complicated a short resignation letter is the way to go. It is my regret to inform you that I must hand in my resignation as head of security at Cornado Center. I have been offered a new job opportunity with Taft Online Services and have made the decision to accept the offer to work in their Charleston office. After careful consideration, I have made the decision to pursue a new career opportunity that aligns with my longterm goals and aspirations.