Subject: Formal Complaint regarding Co-Worker Behavior — [Your Name] [Your Address] [City, State, ZIP Code] [Email Address] [Phone Number] [Date] [Recipient's Name] [Recipient's Designation] [Company/Organization Name] [Address] [City, State, ZIP Code] Dear [Recipient's Name], I hope this letter finds you in good health and high spirits. I am writing to bring a serious issue to your attention concerning the behavior and conduct of one of my co-workers on several occasions. As an employee of [Company/Organization Name], I firmly believe in maintaining a respectful and harmonious work environment, which has made me compelled to report these incidents. I am deeply concerned about the actions and behavior of [Co-Worker's Name]. Despite my attempts to address the situation internally, the problem has persisted, and it is affecting not only my morale but also my productivity and overall well-being at work. The incidents I would like to bring to your attention are as follows: 1. [Provide a detailed account of the first incident, including date, time, and exact location.] 2. [Describe the second incident similarly, highlighting the impact it had on your work or emotional state.] 3. [Continue detailing any additional incidents, providing a clear timeline, location, and potential witnesses.] These incidents have created an uncomfortable and hostile work environment for me, making it increasingly difficult for me to perform my duties effectively. Such behavior violates the basic principles of professionalism and respect that we are all expected to follow in our workplace. In an effort to resolve the situation amicably, I have made numerous attempts to address these concerns and communicate with [Co-Worker's Name] directly. However, my efforts have unfortunately been met with indifference and disregard, leaving me with no alternative but to escalate this matter officially. I kindly request that a thorough investigation be conducted regarding these incidents. I believe it is crucial to identify the root cause of the behavior and determine appropriate actions to prevent its recurrence. Furthermore, I also request that the confidentiality of this complaint be maintained to ensure a fair and unbiased investigation. Furthermore, I trust in [Company/Organization Name]'s commitment to maintaining a respectful and inclusive work environment. Furthermore, I hope that appropriate measures will be taken to address this issue promptly and effectively. Thank you for your attention to this matter. I look forward to a swift resolution to promote a more positive and conducive working environment for myself and others. Yours sincerely, [Your Name] [Your Employee ID/Department (if applicable)]