In the body of the letter, immediately state your intention to resign and provide your reasoning, including only positive feelings towards your work experience. Use one of our resignation letter templates.In the opening paragraph, clearly state that you are resigning from your position. Your resignation letter should include key components like effective date, transition details, future contact information, and more. In support of the Petition, I declare the following:. Add contact details, company name, and date. 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.