You can work 12 hours and cite safety, fill out form 1767. Also there's no 2 weeks notice requirement at the post office.In the body of the letter, immediately state your intention to resign and provide your reasoning, including only positive feelings towards your work experience. Unless otherwise defined in the Office of State Human Resources Manual, the last day the employee reports to work will be the separation date. State your intention to resign: Clearly state in the opening paragraph that you are resigning from your position. Be direct and to the point. The employee should make sure to include their name, current job position, a brief explanation of why they are resigning, and what date their last day will be. A simple resignation letter format includes a resignation statement, an appropriate notice period, and an expression of gratitude.