Resignation letter is the way of the voluntary notification by an employee to his or her employer that they intend to terminate their employment. This voluntary act can be distinguished from other methods of terminating employment such as dismissal or redundancy.
A letter of resignation is written to announce the author's intent to leave whatever position he currently holds. It is usually addressed to his immediate supervisor and delivered at least two weeks in advance and contains such information as his intended last day at work. For courtesy's sake letters of resignation will thank the employer for the pleasure of working under him and the opportunities and experience gained thereby, and also offer to assist with the transition by, for example, training the replacement.
Sometimes it is necessary to provide carbon copies of your resignation letter to all relevant leadership in the company. If protocol requires that you submit your letter of resignation to your immediate supervisor, make sure you provide carbon copy submissions to the department lead, the director of human resources, the company president, etc. Also make and keep a copy of this resignation letter for yourself.