My wife(dependent) and I are in 485 stage. My wife has EAD and AP, but never used them and she doesn't have plan to travel outside US. My H-1 will expire 6 months later. My company has started preparation of my H-1 extension, but they don't want to pay cost on H-4 extension. This triggered my question. If my wife doesn't apply H-4, what are advantages and disadvantages? Any one has experience or can give some analysis?