It's wrong to hug someone without their consent.
Steve is a new employee at Target, and he is being introduced his supervisor Jill for the first time.
Steve wants to greet  Jill.
Steve says hello to Jill, introduces himself and gives her a firm handshake.
Steve goes right up to Jill and gives her a big hug.
Jill sees Steve as professional and competent and forms a positive impression of him.
Jill doesn't feel the hug was appropriate and forms a negative impression of Steve.