In general, an employee's resignation letter should include their last day of work. Provide the date of your last working day: In the same paragraph, provide the date of your last working day.Include the position title and the last day you intend to work. Free resignation email template for when you're leaving your job straight away. Customise the template for your personal circumstances. It typically includes the reason for leaving, the last working day, and an expression of gratitude. Ready to leave your job? If after a full review of the facts and circumstances, The School Board of Orange County,.