Incredibly unprofessional atmosphere all around.
Very high turnover.
Terrible communication.
If you have certain managers your life can become a living hell. No work life balance because if you're a competent employee you are expected to pick up the slack from irresponsible coworkers. No room for advancement under management who doesn't want anyone to be better than them. Senior staff turns a blind eye as long as all the work gets done.
Promotions are based on seniority and not work so you have a lot of incompetent people in management positions.