Does he or his organization needs to file H1B amendment in this case
or only LCA is sufficient?
Seeing many different schools of thought on this. I will just quote the following from the draft guidance link
When You Do NOT Need to File an Amended Petition
A move within an MSA: If your H-1B employee is moving to a new job location within the same MSA or area of intended employment a new LCA
is not required. Therefore, you do not need to file an amended H-1B
petition. However, you must still post the original LCA in the new
work location within the same MSA or area of intended employment. For
example, an H-1B employee moving to a new job location within the New
York City MSA (NYC) would not trigger the need for a new LCA, but you
would still need to post the previously obtained LCA at the new work
location. This is required regardless of whether an entire office
moved from one location to another within NYC or if just one H-1B
employee moves from one client site to another within NYC.
The draft guidance is a good read, I would suggest going through it to understand which exact situation applies in this case.
- Also have you considered calling up USCIS to find more about this issues