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.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. Below you'll find a sample resignation letter informing the employer that the employee is resigning due to a new job opportunity. Use one of our resignation letter templates. I will go over a step-by-step resignation template letter you can use, how to structure it and provide examples of resignation letters. Our Resignation Letter Sample Templates are quick and easy-to-use. They each include formatting and content that sets you up for success. Resignation letter sample with reason better opportunity (Example 3). Example: Short Resignation Letter Sample with Reason Better Opportunity.