Conversation topics to avoid at work include religion, politics, and subjects of a sexual nature. Also, try to steer clear from criticizing non-work matters, especially weight or appearance. You should avoid oversharing intimate details that may make coworkers uncomfortable. Similarly, while you can ask about colleagues to learn more about them, you should avoid prying and being overly curious if your coworkers seem like they are not interested in volunteering personal information. A good guideline to keep in mind is that if the conversation might land you in HR’s office, then you should probably drop the topic or stay silent.