Ron: I am working on H1b for employer A with I-797 approved till dec 2016. My wife's H4 I-797, based on my H1b, is also approved till dec 2016. I intend to move to employer B in 2015, and will get my transfer of H1b premium processed well before my start date with employer B this year, so I will never be out of H1b status. Would my wife's existing H4 I-797 still remain valid till December 2016? Or does she necessarily have to reapply for H4 extension concurrently with my H1b transfer application this year? Thanks.