Management is only profit oriented (which is not negative), they don' t care about the people (which becomes a problem when being a manager). They are great strategists but very poor managers (especially the CEO who is the worst skilled of them when dealing with people).
Very low salaries (especially for young people) because they try to make you believe that you have the job "one million girls would die for"... (yet there is not cemetery in front of the agency!)
They constantly try to make you feel bad about yourself so that you don't even dare thinking about asking for a raise... If you get a small one then they tell you you don't deserve it, how weird hum?
They push people out but try to avoid dismissal, they prefer a nice resignation letter.