Wife with a friend of her boss

My wife's boss now has his friends and colleagues taking my wife out to dinner, she is expected to make sure they enjoy themselves.
She is exposing her breasts for them to grope and spreading her legs for them to finger and fuck her Pussey, they all seem to be having her bareback cumming inside.
I think she is getting to like being used by men as they wish, every one of them has cum in her Pussey or mouth.
What would you do ?
Risk stopping it happening ? What if she loses her job ?
Help ...