The good news is that an H-1B worker may be able to legally stay in the United States beyond the standard six-year limit. For example, if the employer filed a PERM labor certification at least 365 days before the worker reaches the six-year H-1B limit, the employee may qualify for additional time in H-1B status.
Another option may be available if the worker has an approved I-140 immigrant petition but cannot move forward with their green card because a visa number is not yet available. These extensions are allowed under a federal law commonly known as AC21 and, depending on the situation, can provide an additional one to three years of H-1B status at a time. In some cases, the extensions can continue for multiple years.
In other words, reaching the six-year H-1B limit does not always mean you have to leave the United States or give up your job. The rules can be complicated, though, and the timing of a PERM filing or I-140 approval can make a big difference.
At Orange Law, we help H-1B employees and employers understand how these rules apply to their specific situation and take the right steps before the six-year deadline becomes a problem. The bottom line is, valuable employees shouldn’t have to leave the country-or leave their jobs-simply because their H-1B clock is running out.
What Is the H-1B Six-Year Limit?
H-1B visa holders are generally allowed a maximum of six years in H-1B status in the United States, usually split across two three-year terms. Once that six-year period ends, the standard rule is that the person must leave the U.S., switch to a different visa category, or wait outside the country for one year before requesting a new H-1B period.
However, Congress recognized that the employment-based green card process often takes far longer than six years to complete – especially for workers born in countries like India and China, where visa backlogs can stretch a decade or more. To prevent qualified workers from being forced out mid-process, Congress passed the American Competitiveness in the Twenty-First Century Act (AC21) in 2000. AC21 created two separate ways to extend H-1B status past the six-year cap.
The Two AC21 Extension Paths, At a Glance
| One-Year Extension (AC21 §106) | Three-Year Extension (AC21 §104(c)) | |
| Trigger | PERM or I-140 filed 365+ days before the 6-year limit | Approved I-140, but no visa number currently available |
| Length granted | Up to 1 year per filing, repeatable | Up to 3 years per filing, repeatable |
| Approved I-140 required? | No | Yes |
| Visa backlog required? | No | Yes |
| Best for | Workers still early in the PERM/I-140 process | Workers with an approved I-140 stuck behind a priority date backlog |
Path 1: One-Year Extensions Under the 365-Day Rule
If an employer filed a PERM labor certification application, or an employment-based immigrant petition (Form I-140) that didn’t require PERM, and at least 365 days have passed since that filing, the employee can generally receive H-1B extensions in one-year increments for as long as the green card case remains active.
A common misunderstanding is that the PERM must have been “pending” for a full 365 days. That isn’t quite accurate. What matters is that 365 days have elapsed since the filing date, regardless of whether the PERM was later approved, denied and refiled, or converted into an I-140 filing along the way. Even a PERM that was approved quickly and followed by a timely I-140 can still preserve the original 365-day clock.
Example: An employer files PERM for an employee on January 15. The employee’s six-year H-1B limit falls on March 1 of the following year – more than 365 days later. As long as the green card process is still active and the other requirements are met, the employer can request one-year H-1B extensions going forward.
Because this benefit depends entirely on timing, the practical takeaway is simple: start the PERM process early. Waiting too long can mean an employee hits the six-year wall before the 365-day threshold is reached, closing off this option entirely.
Does PERM Approval Cancel This Benefit?
No. Once PERM is approved, the employer typically files Form I-140, and one-year extensions can continue while that case remains pending or unresolved. That said, a certified PERM has a limited shelf life for filing the I-140, so delays after approval can create unnecessary risk to future extension eligibility.
Path 2: Three-Year Extensions With an Approved I-140
The second AC21 provision applies to workers who already have an approved I-140 in the EB-1, EB-2, or EB-3 category but cannot finish the green card process because an immigrant visa number isn’t yet available under the Visa Bulletin.
This is the extension most relevant to employees born in countries facing long employment-based backlogs. If a worker has an approved I-140 and their priority date isn’t current, the employer may request H-1B extensions in increments of up to three years at a time – and this can be repeated as many times as needed until a visa number becomes available.
Unlike the one-year rule, there is no 365-day filing requirement here. The two things that matter are: (1) an approved I-140, and (2) proof that a visa is unavailable as of the date the H-1B extension petition is filed.
Can a New Employer Use an I-140 From a Previous Job?
This question comes up constantly, and the answer is often yes. The employer requesting the H-1B extension does not have to be the same employer that filed and obtained the approved I-140. If the worker remains the beneficiary of a valid, approved I-140 and otherwise qualifies, a new employer can typically rely on that earlier approval to request additional H-1B time.
Important distinction: relying on the old I-140 for an H-1B extension is not the same as inheriting the underlying green card case. The new employer generally still needs to file its own PERM and I-140 if the goal is for the employee to actually obtain a green card through the new job. Employers should also confirm the earlier I-140 hasn’t been withdrawn or revoked, since that can eliminate the benefit.
What Happens If the Priority Date Becomes Current?
The three-year extension exists specifically because a visa is unavailable. If the employee’s priority date becomes current, that basis disappears – the person may no longer qualify for a three-year extension going forward. At that point, the employee may still qualify for one-year extensions under the 365-day rule, depending on the PERM/I-140 history.
There’s also a trap to watch for: regulations generally restrict future one-year extensions if a worker fails to pursue their green card (adjustment of status or an immigrant visa) within one year after a visa number becomes continuously available. In other words, when the priority date moves, the case needs action – not delay.
One Worker, Multiple Extension Types Over Time
These two paths aren’t mutually exclusive, and a single employee’s eligibility can shift as their case progresses:
- PERM is filed in year five of H-1B status → 365 days pass before the six-year limit → one-year extension granted.
- PERM is approved, I-140 is filed and approved, but the priority date is backlogged → employee now qualifies for three-year extensions.
- Years later, the priority date becomes current → the case needs to move to adjustment of status or consular processing, and extension strategy is reevaluated.
Frequently Asked Questions
Can I stay in H-1B status after six years?
Yes, if your employer filed PERM or an immigrant petition at least 365 days before your six-year limit, or if you have an approved I-140 and a visa number is unavailable due to backlog.
How many times can I extend my H-1B beyond six years?
There is no fixed cap on the number of extensions under AC21, as long as the underlying eligibility requirements continue to be met each time.
Does my new employer need to refile my green card case to extend my H-1B?
Not necessarily to extend the H-1B – they can often rely on a prior approved I-140. But to actually complete the green card process with the new employer, a new PERM and I-140 are typically required.
What is the difference between the one-year and three-year H-1B extension?
The one-year extension is based on the passage of 365 days since a qualifying PERM or I-140 filing. The three-year extension requires an approved I-140 plus an unavailable visa number due to backlog.
Does PERM approval end my eligibility for a one-year extension?
No – one-year extensions can continue while the I-140 process moves forward, provided the case remains active and other requirements are met.
How Orange Law Can Help
AC21 extension strategy depends on precise timing. PERM filing dates, I-140 approval dates, priority dates, and Visa Bulletin movement can all affect whether an employee qualifies for a one-year extension, a three-year extension, or no further H-1B extension at all. Getting the analysis wrong can put a valued employee’s immigration status-and an employer’s workforce planning-at serious risk.
Orange Law provides comprehensive U.S. immigration services, including H-1B extensions and AC21 strategy, PERM labor certification, I-140 immigrant petitions, and employment-based green card processing for employers and employees nationwide. If you’re approaching the H-1B six-year limit or hiring an experienced H-1B worker with an existing I-140 approval, our team can review the complete immigration history and help map out the right path forward before time runs out.