My wife has been in US for 6 months on H1 and is going back to India. In india if she applies for H4 , will it be necessary to carry any Salary Slips generated during her stay in US on H1? Is there a possibility that the consulate might demand for her W2 and salary slips before stamping her H4 visa?
The cardinal rule in visas is that consulates can ask for pretty much anything. If they do ask for proof of H-1 employment or pay stubs and you do not have it, the H-4 still cannot be denied. The fact that one has been out of status is no bar to the grant of an H-4 visa.