
Demonstrably illegal (fraudulent) practises towards their clients and their contractors. Wilful negligence to conflict resolution; they simply ignore anyone with problems hoping they'll go away, or use their own quasi-legal team's threats in attempts to silence.
If you say a pay increase is automatically built into a contract, actually follow through. Into my fourth year, the first year's, second year's, and third year's increases were never applied, and all inquiries are not recorded by HR, so it's a blank slate each time.