Explain why you're leaving. Briefly explain the reasons you've decided to leave, both related to your current job and to your new position.We've rounded up tips and examples for writing a resignation letter that'll help you maintain work relationships long after leaving a company. Find out how to write the perfect resignation letter, including examples and templates of a professional resignation letter. Here's how to write a resignation letter when you're quitting for a job with a better compensation package, and you want to provide your employer with a reason. Please accept this letter as a notice of my resignation. Making a career change? Then you'll need to write a great resignation letter as part of the process. Additional details may help the company better serve future employees, but you should still keep the letter brief. 4. A simple resignation letter format includes a resignation statement, an appropriate notice period, and an expression of gratitude.