Dear [Supervisor/Manager], I am writing this letter to bring to your attention a concerning matter concerning a co-worker at our workplace. I have observed certain behaviors and actions from this individual that have been negatively affecting my work environment and productivity. I believe it is essential to address this situation promptly in order to ensure a harmonious workplace for all employees. Firstly, allow me to provide some background information on the individual in question. [Co-worker's name] is a colleague in our department and has been working here for [duration]. While I understand that everyone has their own unique working style and personality, I believe that certain actions of [co-worker's name] have crossed the line of professionalism and have been disruptive to the overall office environment. One of the main concerns I have noticed is [describe the specific behavior or action that is causing the issue]. For example, [provide detailed examples of incidents or situations where the co-worker's behavior was inappropriate or caused disruption]. These incidents have left me feeling uncomfortable and have adversely affected my ability to focus on my tasks and contribute efficiently to the team. Moreover, it is worth mentioning that [co-worker's name] has displayed a lack of respect towards me and other colleagues. This includes [mention disrespectful behavior or comments made by the co-worker]. Such actions create a hostile work environment and hinder our ability to work collaboratively and effectively as a team. I have made multiple attempts to address this issue directly with [co-worker's name] by voicing my concerns and explaining the impact of their actions on me and the team. However, these conversations have not resulted in any noticeable changes in behavior, which has led me to seek your intervention in this matter. To ensure a productive and respectful work environment, I kindly request that you investigate this complaint and take appropriate action to resolve the issues raised. This may involve conducting a formal meeting with both myself and [co-worker's name] to discuss the concerns in detail and outline clear expectations for workplace conduct. Additionally, it may be necessary to provide [co-worker's name] with relevant training or counseling to prevent future recurrence of such behavior. I want to emphasize that my intention in filing this complaint is not to create hostility or animosity in the workplace. Rather, it is to address a genuine concern and contribute to creating a positive work atmosphere for all employees. I trust that you will handle this matter professionally and confidentially, ensuring a fair and impartial investigation. Thank you for your attention to this important matter. I am available to provide any further information or discuss the issue in person if required. Yours sincerely, [Your Name] [Your Employee ID/Department]