Abuse

So I was married for 5.5 years. He kept me isolated from my friends. He flipped out when I got together with my family. He's locked me out numerous times when I came home after 9 pm because I was hanging with sister. We had one car so he kept my daughter and I stuck In the house while he went to hang with his friends. He caused us to struggle a lot at one point homeless because it was hard to carry him and everything else on my own. When he smoked weed he became even more mean. One time at 3 am, he stood over me, snatched off the covers and punched a hole in the wall. I was finally able to escape him but then he got hired at my job, in my department. He would harass me at work. Eventually he got fired but they hired him back and it tries me crazy to even go yo work. My first question is, Is this wrong of my job to hire/re-hire him since they knew the issue? My second question is, I thought this was a form of abuse but many people say it's not abuse unless he constantly physically beats you. What do you guys think?? He put his hands around my neck once.