Verified against official sources — 30 Oct 2026
H-1B Change of Employer: How Portability Works, When You Can Start, and the Risks
NEW Published 30 October 2026
Changing H-1B employers is not a transfer of your old petition. The new employer files a new petition — and a rule called portability may let you start work before USCIS decides it.
Your new employer files a new Form I-129, Petition for a Nonimmigrant Worker, with a certified Labor Condition Application. If you are eligible for portability, you may begin working for the new employer as soon as they properly file a non-frivolous Form I-129 on your behalf, or as of the requested start date on that petition, whichever is later. To be eligible, you must not have been employed without authorisation since your last admission, and the new petition must be properly filed before your current authorised stay expires. Your employment is then authorised until USCIS decides — and if USCIS denies the petition, your authorisation to work based on portability ceases on denial.
SECTION 01There Is No "Transfer" — What Changing Employers Actually Means
People call this an "H-1B transfer," but USCIS does not describe a transfer process. Its changing-employers guidance is built around one action: the new employer properly files a new, non-frivolous Form I-129 petition on your behalf. Your old employer's petition is not amended, assigned, or carried over — the new job stands or falls on its own petition.
That filing follows the same basic steps as any H-1B specialty occupation petition. First, the employer or its agent submits a Labor Condition Application — LCA, Form ETA-9035/9035E — to the Department of Labor for certification. Second, the employer or agent submits the completed Form I-129 to USCIS, with the DOL-certified LCA included. The new position must still be a specialty occupation, and you must still qualify for it — changing employers does not lower either test.
Files the new petition
The new employer is the petitioner: it obtains the certified LCA and files Form I-129. You cannot file this petition yourself, and your previous employer does not file it for you.
Qualify — and protect your eligibility
You provide the evidence that you qualify for the new specialty occupation, and you protect your portability eligibility: no unauthorised employment since your last admission, and no gap that lets your authorised stay expire before the petition is filed.
Decides the new petition
Starting work under portability is not approval. USCIS still decides the Form I-129 on its merits, and its decision controls what happens next — see Section 04.
SECTION 02The Portability Rule: When You Can Start
USCIS states the start rule in one sentence: if you are changing H-1B employers, "you may begin working for the new employer as soon as they properly file a non-frivolous Form I-129 petition on your behalf, or as of the requested start date on that petition, whichever is later."
Read the two dates carefully. Filing is the trigger, not approval — but filing alone is not enough if the petition asks for a later start date. Your first lawful day with the new employer is the later of the proper filing and the requested start date. Starting before both have passed is not portability; it is unauthorised employment, which can itself destroy your eligibility.
USCIS uses both qualifiers for a reason. A petition that is not properly filed, or that is frivolous, does not start portability. In practice that means the filing must be a genuine, complete petition for a real specialty occupation job — not a placeholder submitted just to start the clock.
SECTION 03Who Qualifies for Portability?
USCIS states the eligibility test directly: "To be eligible for portability, you must not have been employed without authorization from the time of your last admission into the United States, and your new employer must properly file a new, non-frivolous petition before your H-1B period of authorized stay expires."
That gives you two conditions to check honestly before relying on portability:
- A clean record since your last admission. Any employment without authorisation since you were last admitted — working for an employer who had not filed for you, or staying in a job after authorisation ended — breaks this condition.
- Filed in time. The new employer must properly file before your current H-1B period of authorised stay expires. A petition filed after that date does not meet the test USCIS states, however strong the job offer is.
If either condition fails, do not start work on the strength of a filing receipt. That is exactly the situation where individual legal advice matters most, because the options — and the risks — are case-specific and are not stated on the pages this guide is built on.
SECTION 04While USCIS Decides — and What Happens on Approval or Denial
Portability bridges the decision period. USCIS states: "If you are eligible for H-1B portability, your employment is authorized until USCIS has made a decision on the Form I-129." You are not working on a promise; you are working under an authorisation that runs until the decision arrives.
If the petition is approved, USCIS states you may continue working for the new employer for the period of time indicated on the new petition approval. From that point, your position rests on the approved petition itself, not on portability.
If the petition is denied, the position changes immediately. USCIS states that if the new petition is denied, "your authorization to work based on portability ceases upon denial of the petition." USCIS adds one narrow fallback: you may continue working for your previous employer if your prior period of authorised employment is still valid. If you have already left that job, or that period has ended, that fallback does not help you — which is why the decision to resign before approval is a real risk judgement, not a formality.
SECTION 05If Your Old Job Ends First: The Up-to-60-Day Window
Sometimes the move is not voluntary or not neatly timed: you are laid off, fired, or you quit, before the new petition is filed. USCIS states the window that follows: "If you are laid off, fired, quit, or otherwise cease employment with your previous employer, you may have up to 60 consecutive days or until the end of your authorized validity period, whichever is shorter, to find new employment, change status, or depart the country."
Note the wording. It is up to 60 consecutive days, and the window is cut short if your authorised validity period ends sooner. It is not automatically 60 days for everyone. USCIS describes what the window is for — finding new employment, changing status, or departing — and the new employer's petition still has to be properly filed before your authorised stay expires for portability to apply, so treat the window as time to get a filing done, not time to spare.
SECTION 06The Trap: Moving From Cap-Exempt to Cap-Subject Employment
Portability works differently if your current job is cap-exempt — for example, at a university or research organisation — and the new job is with an ordinary cap-subject employer. USCIS is explicit: "If you are moving from cap-exempt to cap-subject employment, your new employer's H-1B petition will be subject to the H-1B cap."
That changes the sequence completely. A cap-subject petition cannot simply be filed when the offer arrives: USCIS states the new employer must first submit an electronic registration when the registration period opens, and adds: "This is typically in March." Only a selected registration supports a cap-subject petition, and cap petitions must have a start date of 1 October or later of the applicable fiscal year and may not be filed more than six months before the requested start date. A March registration and an October start can mean a long gap between jobs — plan the move around that calendar, not around your preferred resignation date. Our cap-exempt employers guide explains which employers sit outside the cap in the first place.
If you keep the cap-exempt job, concurrent employment in a cap-subject position is treated differently from leaving cap-exempt employment altogether. That position is covered, with its conditions, in our cap-exempt employers guide rather than duplicated here.
SECTION 07Premium Processing and Planning the Start Date
Because a denial ends portability-based authorisation, some employers ask USCIS for a faster decision. Premium processing is an optional expedited service for Form I-129, requested with Form I-907 for a fee. USCIS guarantees that it will take adjudicative action within 15 business days for most classifications, including H-1B specialty occupation workers, or it will refund the premium processing fee.
"Adjudicative action" does not mean approval. USCIS lists the possible actions as issuing an approval notice, a denial notice, a notice of intent to deny, or a request for evidence, or opening an investigation for fraud or misrepresentation. If USCIS requests evidence or issues a notice of intent to deny, the premium processing period stops and resets, and a new period begins when USCIS receives the response. Filing Form I-907 also gives no special cap benefits. No premium fee figure is printed here, because the premium processing page checked does not state the amount — check the current fee in the USCIS Fee Schedule, Form G-1055, before paying.
On travel: this guide deliberately keeps travel cautions minimal, because travelling while a change-of-employer petition is pending raises separate questions that deserve their own treatment. See our dedicated guide on travel while an H-1B petition is pending before making travel plans around a job change.
SECTION 08Common Myths and Mistakes
"My petition transfers to the new employer"
Nothing transfers. The new employer files a new Form I-129 petition, with its own certified LCA, and USCIS decides that petition on its own merits.
"I must wait for approval before starting"
Not if you are eligible for portability: you may start as soon as the new employer properly files a non-frivolous petition, or on the requested start date, whichever is later.
"Starting under portability means I am safe"
Portability authorisation lasts only until USCIS decides. On denial it ceases, and the previous-employer fallback helps only if that prior authorised period is still valid.
"The 60 days always means 60 days"
The window is up to 60 consecutive days or until the end of your authorised validity period, whichever is shorter. For many workers the real window is the shorter one.
FAQFrequently Asked Questions
Is an H-1B "transfer" a real filing?
No. There is no transfer filing as such. Changing employers means the new employer properly files a new, non-frivolous Form I-129 petition on your behalf, with a certified Labor Condition Application — the same petition form used for new H-1B employment.
When exactly can I start working for the new employer?
As soon as the new employer properly files a non-frivolous Form I-129 on your behalf, or as of the requested start date on that petition, whichever is later — provided you are eligible for portability: no unauthorised employment since your last admission, and the petition properly filed before your authorised stay expires.
Can I keep working while the new petition is pending?
Yes, if you are eligible for portability: USCIS states your employment is authorised until USCIS has made a decision on the Form I-129. That authorisation depends on the petition remaining undecided — it is not an approval.
What happens if the new petition is denied?
Your authorisation to work based on portability ceases upon denial. USCIS states you may continue working for your previous employer only if your prior period of authorised employment is still valid. If it is not, take legal advice promptly about your options.
My job ended before I found a new employer. How long do I have?
USCIS states you may have up to 60 consecutive days, or until the end of your authorised validity period, whichever is shorter, to find new employment, change status, or depart the country. Use the window to get a new petition properly filed in time — portability requires filing before your authorised stay expires.
I work for a university. Can I move straight to a private company?
Not on a simple portability timeline. Moving from cap-exempt to cap-subject employment makes the new petition subject to the cap: the new employer must first register when the registration period opens — typically in March — and only a selected registration supports a petition, which must have a start date of 1 October or later.
Official references and verification status
These references were accessed and checked on 30 October 2026 (see the accompanying sources file for the claim-by-claim record): the USCIS H-1B page for the filing steps, the portability rule and its eligibility conditions, authorisation until decision, the effect of denial, the up-to-60-day window, and moving from cap-exempt to cap-subject employment; the USCIS registration page for the registration-first rule and selection; and the USCIS premium processing page for the 15-business-day adjudicative-action guarantee. Limits: no premium processing fee figure is printed, because the page checked does not state it (check Form G-1055); travel while a petition is pending is not covered here beyond the cross-link above; and nothing here states selection odds or approval rates, because no page checked supports them.
- USCIS — H-1B Specialty Occupations
- USCIS — H-1B Electronic Registration Process
- USCIS — How Do I Request Premium Processing?
General information, not legal advice.
General information only. This guide is based on official sources publicly available and checked on the date shown on this page. Visa rules change, and consular and USCIS officers decide every case on its own facts — nothing here is a confirmation or a guarantee for your individual case, and this is not legal advice. Always confirm the current requirement on the official page linked in this guide before you act, and consider a qualified immigration attorney for your specific situation.