[Rivière]

I know that feeling. There's always that one staff member who comes on board and just ruins the entire flow of the workplace. It really destroys the mood and atmosphere as well.

Have you considered talking to the staff member about their behaviour? Maybe they're not aware, or at least fully aware, of how they're behaving and may need some extra direction to help them out.

You could also consider taking the situation higher than the management officers, given that they don't provide any support. If they're not being supportive, they're not doing their job either, and it's definitely worth bringing to the attention of someone higher than themselves.