回复：Urgent help needed! Work location change, required to do H1B

1. Do I have to do the H1B amendment?
- strictly yes

Is there a time limit as to when I need to file the H1B amendment after my work location change? If I have missed the time limit to file the amendment, will I be out of status?
- no specific time frame

Usually what forms and documents we need for the H1B amendment?
- http://blog.wenxuecity.com/blogview.php?date=200709&postID=27583#I129

Could you tell me the form number and I will research on the form instructions.

2. Do I have to cancel the green card application if nothing changed except the work location? Where I can find the corresponding rules regard this?
- google ETA-9089 (PERM)