How to change from L1 to H4? How long does it take?

[bhagatali]

Hi Everyone,

I have a valid H1 till 2015 and my wife has her valid L1 till 2017. We are both in the US working for a client assignment. My wife assignment is ending next week and I need to urgently change her to a H4 status so that she can continue to stay in US with me. Can someone advise on the following?

1) How and where do I file for this COS within the US?
2) How long does the process take?
3) Can she stay here as soon as I file for a H4 or do I have to wait for an acknowledgment from USCIS or can she only continue staying if the H4 COS is approved?
4) Will she automatically lose her L1 when she files for H4 or does she lose her L1 only when her H4 is approved?

Thanks for advising.

Regards
Ali.

[raghvi]

Duplicate post. Please follow up on the same in the L1 forum.