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.Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation. Learn how to write a professional resignation letter with concise tips and examples. How to write a resignation letter, what to say, and what not to. Find examples for different situations and a customizable letter of resignation template. I would not give any reason for leaving. 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. Use one of our resignation letter templates. 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.