H-1B Transfer: How to Change Employers Without Losing Your Status
One of the most powerful — and most misunderstood — features of the H-1B is portability. Under AC21, if you have been in H-1B status for at least 6 months, your new employer can file a transfer petition and you can start work immediately upon filing, without waiting for USCIS to approve it. No more being trapped by a bad manager, a toxic workplace, or a better opportunity you cannot take because your visa is "tied" to your employer.
But portability has rules, and misunderstanding them can create serious status problems. This guide explains exactly how H-1B transfers work.
What H-1B portability means
An H-1B transfer is not a transfer of the visa itself — it is a new H-1B petition filed by your new employer. What makes it unique is that you are authorized to work for the new employer as soon as the petition is received (not approved) by USCIS, provided you were maintaining valid H-1B status immediately before the new petition was filed, your previous H-1B petition was cap-subject (not cap-exempt), and you are not currently in any period of unauthorized stay. You do not need a new H-1B cap slot — the transfer borrows your existing cap status from your prior employer.
The transfer process step by step
Step 1: Your new employer files Form I-129 H-1B petition with supporting documents (LCA, support letter, evidence of specialty occupation and your qualifications). Step 2: USCIS receives the petition and issues a receipt notice. Step 3: You may start work for the new employer on the receipt date. Step 4: If USCIS issues an RFE, your attorney responds. Step 5: USCIS approves the petition and issues an I-797 approval notice with a new validity period. Between steps 2 and 5, you are in a period of authorized work based on the pending petition. If your prior employer revokes their petition during this window (rare, but possible), your authorization depends on the new petition still being valid and timely filed.
The 240-day rule during a transfer
If you are transferring while your current H-1B I-94 has already expired (but an extension was timely filed), the 240-day rule applies for the old employer. For the new employer, the H-1B transfer petition must be filed while you still have authorized stay — ideally before your I-94 expires. Filing a transfer petition after your I-94 expires creates a gap in status that cannot be corrected by portability. Timing the transfer correctly is one of the most important variables.
Concurrent H-1B: working two jobs simultaneously
H-1B allows concurrent employment. If your primary employer holds your H-1B, a second employer can file a concurrent H-1B petition (also I-129) that runs simultaneously. This is commonly used for part-time consulting, moonlighting, or advisory roles. Each employer must maintain a separate LCA and I-129. Your total compensation from all H-1B employers must meet the prevailing wage requirements for each position. Concurrent H-1B does not increase your cap count — all concurrent positions share the single cap slot from your primary employer.
Frequently asked questions
Do I have to tell my current employer I am transferring?
Legally, you are not required to notify your current employer before the new petition is filed or before you start at the new job. However, practically, you should review your employment agreement for notice period requirements and non-solicitation clauses. Immigration law does not override employment contract obligations.
Can my current employer cancel my H-1B after I transfer?
Yes. If your current employer revokes the underlying H-1B petition after you have started at the new employer, the new petition must stand on its own. If the new petition is filed and pending, you are generally protected. If the new petition has not yet been filed, revocation of the original can create a status problem. This is why you want the new petition filed — and receipt notice in hand — before leaving the old job.
Does the transfer reset my H-1B 6-year clock?
No. The 6-year H-1B cap clock continues counting from when you first entered H-1B status, regardless of how many transfers you make. A transfer does not add time to the clock. Extensions beyond 6 years are only available under specific conditions (approved I-140 or PERM pending 365+ days).
Disclaimer: This article is for informational purposes only and does not constitute legal advice. Immigration law is complex and situation-specific. Always consult a licensed immigration attorney before making decisions about your immigration status.