Briefly provide context for why you're resigning. Refrain from going into too many details that may create a negative tone.I would write in the following manner: This is a resignation letter. Briefly describe your experience. You can describe any negative experiences you've had that you feel are necessary to include. In this article, we cover everything you need to know about writing a resignation letter without notice and provide an example to get you started. Resignation letter when leaving on bad terms. Resignation letter for unsatisfactory working conditions. Resignation letter when leaving on bad terms. Resignation letter for unsatisfactory working conditions.