[r00fus]

Spousal Employment Authorization Document (EAD) is huge. IIRC, H1B spouses (ie, H4Bs) were recently allowed, but only if the H1B holder is applying for legal residency - which can take a while.

In this case, you can get an EAD for your spouse as soon as you get your parole.

[OmarIsmail]

WOW. This instantly makes this program substantially better than many other visas. The difference between a working spouse and not is worth hundreds of thousands of dollars - especially over a 5 year time frame. This is better than the O1!!

[anaclet0]

I was told that a person with an H4B VISA can work only after the PERM has been accepted, during the adjustment of status (the last step of a green card process)