One must be confident that the management understands and sympathizes and cooperates with the employee and allows him to withdraw it. To write a withdrawal letter of resignation, address it to your direct supervisor or HR department.Make sure to follow proper business letter format in your letter. A submitted resignation can be withdraws (a preferred wording) any time before it is accepted the proper acceptance signals the end of his board membership. Am I retiring or resigning? Am I retiring or resigning? You do want to include the basics – your name, the addressee, and the date. These things are typical in any letter, but it's important to remember them. Ideally, you should send your resignation letter at least two weeks before your planned resignation date. This page contains forms, policies, and manuals for estate administration in Philadelphia.