The following question 7 under the section C is to address a similar question for 1 year H1-extension. However the principle should be applicable to the 3-year extension as well, because the law (AC21 section 104(C)) does not say that the apporved 140 must from the same employer requesting the H-1B extension either.
Question 7. Should service centers or district offices deny a request for an H-1B extension beyond the 6-year limit where the labor certification or immigrant petition from an employer who is not the H-1B petitioner was filed for the beneficiary more than 365 days ago?
Answer: No. The statute does not require that the labor certification or immigrant petition must be from the same employer requesting the H-1B extension.
Question 7. Should service centers or district offices deny a request for an H-1B extension beyond the 6-year limit where the labor certification or immigrant petition from an employer who is not the H-1B petitioner was filed for the beneficiary more than 365 days ago?
Answer: No. The statute does not require that the labor certification or immigrant petition must be from the same employer requesting the H-1B extension.