Bullies are everywhere whether in school and at work. If you experience bullying at work well all i can say is that handle it tactfully. Don't harm them maybe don't mind them but be friend to them in such a way you can express yourself to them. Once you are a friend to them try to explain your side and your part is to understand him/her (bullied) You might help them knowing the root cause why they bullied someone or whats behind they become bullies. Be fierce and steadfast so that no one can pin you down. Don't ignore them because they'll think that you are weak to handle them but instead be courageous to face them in a professional way. In this way those bullies will stop.