回複：與863211探討：如有補材料要employment letter，：請教pjiang, 863211等老師,我的perm

與863211探討：如有補材料要employment letter，是不是公司A出，而不是公司C出這個letter。
-After your I-485 pending >180 days and you changed your job, USCIS usually ask you to show your current job status and you work for Company C, of course you have to ask Comapny C to provide the employment verification letter showing you are working in the same/similar area as the one indicated in your I-140 based on AC21.