You want to give at least a two weeks' notice. Please accept this letter as a notice of my resignation.Below you'll find a sample resignation letter informing the employer that the employee is resigning due to a new job opportunity. Learn how to write a professional resignation letter with our stepbystep guide including 15 resignation letter examples for various situations. Use an attractive header with your personal contact info, include the recipient's name, company and address, and include the date.