"I am giving notice. I will be leaving to take other employment.Resignation letter effective immediately due to toxic environment. Don't write anything negative in the resignation letter 1 regardless of circumstances. Just write the letter as you would normally do and be done with. Briefly describe your experience. You can describe any negative experiences you've had that you feel are necessary to include. When resigning due to a toxic work environment, maintain professionalism. Use the unfair treatment resignation letter template when resigning because of negative experiences in the workplace, such as discrimination and bias. How to write a resignation letter; Tips for resigning from work.