H-1B Visa Transfer Rules: How to Change Employers on H-1B
Changing employers on H-1B is legal and does not require re-entering the lottery. The rules are specific about timing, documentation, and what constitutes a valid transfer versus a risky gap in status.
How H-1B Transfer Works
H-1B status is tied to a specific employer. To work for a new employer, that employer must file a new H-1B petition (Form I-129) with USCIS. This is called an H-1B transfer (technically: a change of employer petition). Unlike initial H-1B, no lottery is required for transfers, the new employer simply files and waits for adjudication. The key statutory provision is INA 214(n), H-1B portability.
H-1B Portability (INA 214(n))
Under H-1B portability, you can begin working for the new employer as soon as the new employer files a non-frivolous Form I-129 petition, you do not need to wait for approval. Requirements: (1) You must have been in lawful H-1B status at the time of filing. (2) The new petition must be timely filed. (3) The petition must be non-frivolous (a legitimate employment offer). (4) You cannot have accrued more than 180 days of unlawful presence since last lawful admission. If all conditions are met, you can start on day 1 of filing.
AC21 Portability for Green Card Holders
For H-1B holders with an approved I-140 petition who have waited 180+ days since filing their I-485 or since their I-140 was approved, AC21 allows changing to a 'same or similar' job classification without losing the green card priority date. 'Same or similar' is defined broadly, the same SOC major group (2-digit code) is typically sufficient. An attorney evaluation is recommended before relying on AC21 portability.
What the New Employer Needs to File
The new employer must file: (1) Form I-129 with H Classification Supplement. (2) New LCA certified by DOL for the new work location and wage. (3) Support letter from new employer with job description. (4) Beneficiary's passport copies, I-94, prior H-1B approval notices. (5) Filing fees: $730 base + ACWIA + Asylum Program Fee + optional premium processing. The LCA must be certified before filing, allow 7 business days minimum.
Risks and What to Avoid
1. Resigning from old employer before new employer files, creates a gap in status, invalidates portability. File first, then resign. 2. New petition denied while relying on portability, if denied, work authorization ends immediately. Premium processing reduces this risk. 3. Gaps between employers, even a few days without active employment (or filed transfer petition) can create unlawful presence issues. 4. New employer failing to maintain proper documentation, keep all receipt notices and approval notices from both old and new employer. 5. AC21 portability without attorney evaluation, the 'same or similar' standard has edge cases.
Frequently Asked Questions
Do I need to re-enter the H-1B lottery to change employers?
No. H-1B transfers do not require the lottery. The new employer files a change-of-employer petition (Form I-129) directly with USCIS at any time. No lottery, no registration window, no annual cap applies to transfers.
Can I start working for the new employer before my H-1B transfer is approved?
Yes, under H-1B portability (INA 214(n)). As soon as the new employer files a non-frivolous Form I-129 and you have a receipt notice, you can begin working for the new employer. You do not need to wait for the actual approval. Keep the receipt notice with you while working.
What happens to my green card priority date if I change employers?
Your priority date from an approved I-140 petition follows you if you change to a same or similar occupation after 180 days under AC21. The original employer's I-140 approval is what matters, that priority date is portable. The new employer typically files a new I-140 to re-establish sponsorship going forward.
How long does an H-1B transfer take?
Standard processing: 3–6 months. Premium processing ($2,805): 15 business days for a decision (approval, RFE, or denial). For smooth transfers with clean documentation, approvals often come in 2–4 weeks with premium processing. Allow at least 30 days of buffer before any critical deadlines.
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