Use template Download PDF. Sample resignation letter due to toxic work environment.Resignation letter effective immediately due to toxic environment. If you are resigning from your job due to a hostile work environment and bullying, you may want to include the following information in your resignation letter. Looking to resign with a Unfair Treatment Resignation Letter? Use our resignation letter template for reason roles. You need to know how to write a resignation letter to your workplace. A negative resignation letter will only present you in a bad light. The reason for my resignation is the toxic work environment that I have been experiencing. The real issue is generally a mix of bad leadership and hiring practices.