Write a letter of resignation. It's up to you how detailed you want to make it.Learn how to write a resignation letter with a notice period. Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation. Kamala Harris blasted the treatment of staff on the California Democrat's presidential campaign in a resignation letter this month. A simple resignation letter format includes a resignation statement, an appropriate notice period, and an expression of gratitude. When laying off employees most companies let you go immediately. The only thing you have to say in a resignation letter is "I quit". Specify your last working day within two weeks from the notice date. Clearly state the final day to avoid misunderstandings.