- Interview appointment letter.
- Original approved petition I797.
- Valid passport.
- You are recommended to have passport valid for travel for at least six months beyond your date of entry into the U.S.
- Original employment verification letter with description of your proposed duties.
- One photograph as per specification
- Original signed form DS-156
- Original form DS-157
- Valid HDFC Bank visa fee receipt.
- Demand draft for Issuance Fee .
- Original degree certificates.
- This extension can only be applied by the employer and not by the individual H1b holder