Pretty much everything. Management can be pretty and I've caught multiple managers red handed lying to my face to try and blame me for various things, or to make an excuse for why they won't do their job. Don't bother giving managers feedback or criticism of behavior or anything about the company - they'll pretent to care then do nothing. This job is genuinely so stressful that my therapist and doctor were recently able to confirm that the stress from this job has beed deeply worsening my medical issues.