回复：急问高人如小白兔H1B transfer 问题？

一般来说，H1B transfer是收到receipt之后才去工作， 对方这样做对我的签证来说有影响吗？

If it is received, you can work for new employer. The key point is whether you can be sure that it is really received. Risk averter will wait for actual receipt in mail, risk taker can transfer taking the risk that the application package is not lost on its way before reaching USCIS.

最后一条是如果申请被据，我必须马上停止工作。
absolutely true, if H1 denied, you cannot work, and employer should not let you either.