回複：我擔心新公司不熟，一旦有裁員(這種事情在美國誰也不敢打保票)，影響我的綠卡申 請身份 這樣我在老公司還可以兜底， 不知道此

If you are laid off and your old employer want to hire you back, you just go back to work for your old employer at that time and you still will be OK for your I-485.