L1B to H1B COS - *** URGENT *** as H1B approved on Nov 1, 2012

[madhavans]

Hi Team, I'm working for Company A on L1B from April 03, 2010 with I94 validity till June 09, 2015 and got my H1B approved by USCIS with status as "Decision" with comments as "On November 01, 2012, this I129 PETITION FOR A NONIMMIGRANT WORKER was approved and we sent you an e-mail notice".

Company A asks to serve 1 month notice period.

1. Is it legal to work for Company A now?

2. How many days long am I legally allowed to work for Company A?

3. Can I work for Company A until I receive my I797 and I94 at my hand?

Thanks in advance!