urgent, please help.

waitfor140

Registered Users (C)
I submited the I-140 (Alien with extrordinary ability) by myself and still waiting for the approval. Right now, my company is in very unstable shape and I could lose my current job at any time. I got several questions: ( I still have not filed I-485 and I-765 and my current status is H1)

1. Can I change my job now. If I change the job, do i need to resubmit the I-140?
2. If i submit the I-485 and I-765 and get the approval of I-765, can i change the job immediately or i must wait for 180 days before i change job.
3. If i am laid off, can i change my status to B2. (gvie me more time to find a new job)

thanks.
 
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