You can start work as soon as you you receive the H1B receipt.

来源: 于 2008-10-17 18:50:14 [旧帖] [给我悄悄话] 本文已被阅读：次

You can start work as soon as you you receive the H1B receipt. However, you should think about your back-up plan if your transfer is denied. Usually there is a small chance, but you still have the risk.