Letter of resignation is a letter written by an employee to announce his/her intent to leave a position or office of employment currently held , a letter of resignation will often take legal effect of a notice required under the relevant terms of the position before quitting a job. Many appointments and contractual employments are terminable by unilateral notice or advance notice of a specified period of time. A letter of resignation can be treated as evidence or record as to the date or time of the resignation of an employee.