4. Their Political and Religious Beliefs

People’s political and religious beliefs are too closely tied to their identities to be discussed without incident at work. Disagreeing with someone else’s views can quickly alter their otherwise strong perception of you. Confronting someone’s core values is one of the most insulting things you can do.

Granted, different people treat politics and religion differently, but asserting your values can alienate some people as quickly as it intrigues others. Even bringing up a hot-button world event without asserting a strong opinion can lead to conflict.

People build their lives around their ideals and beliefs, and giving them your two cents is risky. Be willing to listen to others without inputting anything on your end because all it takes is a disapproving look to start a conflict. Political opinions and religious beliefs are so deeply ingrained in people, that challenging their views is more likely to get you judged than to change their mind.

5. What They Do on Facebook

The last thing your boss wants to see when she logs on to her Facebook account is photos of you taking tequila shots in Tijuana. There are just too many ways you can look inappropriate on Facebook and leave a bad impression. It could be what you’re wearing, who you’re with, what you’re doing, or even your friends’ commentary. These are the little things that can cast a shadow of doubt in your boss’s or colleagues’ minds just when they are about to hand you a big assignment or recommend you for a promotion.

It’s too difficult to try to censure yourself on Facebook for your colleagues. Save yourself the trouble, and don’t friend them there. Let LinkedIn be your professional “social” network, and save Facebook for everybody else.

6. What They Do in the Bedroom

Whether your sex life is out of this world or lacking entirely, this information has no place at work. Such comments might get a chuckle from some people, but it makes most uncomfortable, and even offended. Crossing this line will instantly give you a bad reputation.