I have a approved I-140 with on H-1B for more than six years working for company A. If I change to company B I will get 3 years of extension for new employer B. If I leave employer B before my PERM or I-140 is approved with employer B and join employer C. How many years of H-1 extension I will get ? Can I get 3 years of H-1 extension using approved I-140 with employer A.
Unless and until the I-140 is revoked, your first approved I-140 can continue to be used for H-1 extensions for any number of employers.