回複：急問高人如小白兔H1B transfer 問題？

一般來說，H1B transfer是收到receipt之後才去工作， 對方這樣做對我的簽證來說有影響嗎？

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.

最後一條是如果申請被據，我必須馬上停止工作。
absolutely true, if H1 denied, you cannot work, and employer should not let you either.