H1B extension, LCA question 30-day posting notice?

bigbulus

Registered Users (C)
Hi all,

I would like to file second H1B extension in the same company, same position based on recapture.

My questions:

1. Is LCA required for second H1B extension?

2. Is 30-day posting notice required to file LCA?
From what I know, LCA can be filed online and usually get the certification online within 24hrs. Why does employer need to do a 30-day posting notice if employee is not terminated from the job?
 
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