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.A good resignation letter is a simple one. There is no real need to elaborate farther than you have to. 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. Notice that you are resigning, your last date of employment, and a simple thank you for the opportunity to work at your soon to be ex-employer. We have also provided some samples that will help you understand the content of this letter and the best way to write it. Use the sample resignation letter below as a template for your own letter, but just be sure to rewrite the letter to fit your particular employment situation. Simple resignation letter and email message samples to use to quit a job, as well as tips for what to write and how to resign. A simple resignation letter format includes a resignation statement, an appropriate notice period, and an expression of gratitude.