I am asked by my lawyer to obtain experience letters from my 2 previous employers in their letter head and signed by someone from HR. Is this something that is required for the application of I-140?
In my view, these letters should be obtained BEFORE the PERM application is even started. It can be one of the required and key pieces of evidence in I-140. But the preparation to deal with this issue has to be made even before the PERM application is drafted.