HR is there solely for the companies benefit not yours. In some cases should be call IR (industrial relations),
Yes, and can very quickly degenerate into a legal dispute. The friendly face of HR being replaced with stern faces of IR and lawyers. The claimant will be accused of under performing and that it was legitimate performance management and not bullying and harassment is a standard method of fighting! If you ever get in this situation get a good lawyer. Do not rely on HR or in some cases even the union they have a multitude of issues and you may not get attention deserved. Document everything and act in a professional non emotional manner and you can win.