Dear [Supervisor/HR Manager], I am writing to address a disruptive situation that has been affecting my productivity and well-being in the workplace. It is with great concern that I bring to your attention the ongoing issues I have been facing with my co-worker, [Co-Worker's Name]. Despite multiple attempts to resolve this matter informally, I feel compelled to formally lodge a complaint due to the consistent impact it has on my ability to perform my duties effectively. Please find below a detailed account of the incidents I have encountered: 1. Intimidating Behavior: On several occasions, I have witnessed [Co-Worker's Name] engaging in intimidating behavior towards me, such as unwarranted shouting, aggressive gestures, and invasive personal remarks. This conduct not only creates a hostile work environment but also undermines my confidence and ability to focus on my tasks. 2. Unprofessional Language: [Co-Worker's Name] frequently uses offensive and derogatory language both while interacting with me directly and when speaking about others in the office. This type of language not only breaches our company's code of conduct but also hampers the collaborative and respectful atmosphere in our workplace. 3. Consistent Disregard for Deadlines: [Co-Worker's Name] consistently fails to meet deadlines, causing delays and forcing team members, including myself, to pick up the slack. This not only adds unnecessary pressure to our already demanding workload but also creates bottlenecks in the completion of projects. 4. Refusal to Communicate Effectively: In multiple instances, [Co-Worker's Name] has demonstrated a blatant disregard for effective communication. They often ignore important emails, fail to respond to urgent requests promptly, and show a general lack of responsiveness that adversely affects the team's overall productivity. I have attempted to address these concerns with [Co-Worker's Name] directly by discussing the impact of their behavior on the team's efficiency and work environment. However, all my attempts at open dialogue and reconciliation have been met with hostility and further aggravation. As an essential member of this organization, I kindly request immediate intervention to address this matter appropriately. I believe that an investigation into these allegations and subsequent action will help rectify the situation, foster a healthy work environment, and enable me to continue contributing effectively to the company's success. I am open to providing any additional evidence or documentation that might be required to support the investigation. Furthermore, I request that this complaint remains confidential to avoid any unnecessary tensions or biases within the workplace. Thank you for your attention to this matter, and I look forward to seeing a resolution that ensures a respectful and productive work environment for all employees. Sincerely, [Your Name] [Your Employee ID/Designation] [Contact Information: Phone Number and Email Address] Different types or variations of Hawaii Sample Letter for Complaint Concerning Co-Worker may include: — Hawaii Sample Letter for Complaint Concerning Harassment by a Co-Worker — Hawaii Sample Letter for Complaint Concerning Discrimination by a Co-Worker — Hawaii Sample Letter for Complaint Concerning Bullying by a Co-Worker — Hawaii Sample Letter for Complaint Concerning Workplace Violence by a Co-Worker — Hawaii Sample Letter for Complaint Concerning Insubordination by a Co-Worker