How should one deal best with a colleague, who's having some possible problems ?
One of my colleagues behaves very weird in and outside work.I've heard a lot of complaining in the office regarding him. Up to now, this phenomenon is widely known in the company.
He is also kind of aggressive and often behaves abnormally. It's hard to have a conversation at all, but when you do, no normal person would say anything like this.
Unfortunately, we have some common interests outside of work and my complain would be not very useful because the would think it's on personal motives.
How can and should I talk with someone from the management?
OK, I'm not a doctor, I can not give any diagnosis, but something is wrong.
I don't evaluate anyone's performance as well. The problem is with behavior that is a problem.