Your letter should formally acknowledge the employee's resignation, confirm their last day of employment and wish them the best. Commence your letter with a formal salutation and a concise introductory paragraph.RE: Letter of Resignation. Record your Confirmation Number. A confirmation email will be sent to the email address provided when completing the claim application. The decision to resign belongs solely to the employee. An employer can not refuse to accept it. Employees who resign from employment should provide a twoweek notice in writing in order to be considered as having resigned in good standing.