As an HR expert, I understand your concern about your colleague's behavior of constantly eavesdropping and asking irrelevant questions. It is important to maintain a professional and respectful environment in the workplace. Although this may be frustrating for you, it is necessary to address the issue appropriately.Firstly, I suggest speaking to your colleague directly about your concerns. It is possible that they may not be aware of how their behavior is affecting others. Communicate your discomfort and kindly ask them to respect others' privacy and conversations. However, keep the conversation polite and non-accusatory to avoid a confrontational situation.If the behavior continues despite your conversation, you may need to involve your manager or the HR department. Provide them with specific instances where your colleague's behavior has been disruptive or intrusive. The management should intervene and address the issue by reminding your colleague of the importance of respecting privacy and maintaining professionalism at the workplace.HR might also consider conducting a general training or workshop on workplace etiquette and professionalism to prevent such situations in the future. This can help create a culture of respect and ensure that all employees understand acceptable boundaries.Remember, it is crucial to approach the situation calmly and professionally, focusing on finding a resolution rather than blaming anyone. By taking these steps, you can work towards maintaining a harmonious and respectful work environment for everyone involved.