Is it possible for Employer A to transfer seeing that H1B is not valid until October 2013?

Question

Employer A is currently holding my L1B visa while in the meantime I have moved forward with Employer B for an H1B. I am not actually on there payroll yet. The H1B will be valid starting October 2013. Now, Employer A would like to transfer my H1B from Employer B. If they can transfer what paperwork will they need from Employer B? What happens if Employer B cancels the H1B during that process? Can that just use a copy of the H1B petition to transfer?

Answer 1

Since you are H1 approved you are quota exempt. Any employer can file an H1 for you and have it approved. Once approved, you can start working for them.