Questions regarding H1B visa transfer

I am currently working for employer A, I am thinking to transfer my h1b visa to employer B. The new company wants me to start as soon as possible. I don't know when can I start working for the new employer? Can I start working for the new employer while filing the H1B transfer doc? Or should I wait until the approval of H1B transfer?
Thanks for your help.

所有跟帖： 

• 回复：start from you receive your application receipt notice -radiology- ♂ (0 bytes) () 11/09/2007 postreply 17:33:19

• Thanks, it takes how long to receive the notice? -cakelover- ♀ (0 bytes) () 11/09/2007 postreply 18:44:40

• 回复：Wrong, After you file, you may work. No receipt needed -doshexh- ♀ (0 bytes) () 11/09/2007 postreply 22:24:12

• 回复：Questions regarding H1B visa transfer -doshexh- ♀ (148 bytes) () 11/09/2007 postreply 22:22:47