The H-1B 240-Day Rule: How Long You Can Keep Working After Filing an Extension

Why this rule is in every H-1B thread this week

If you have spent any time on H-1B forums in the last few days, you have probably seen the same question over and over. Can I keep working if my extension is still pending? Often the answer is yes, and the rule that makes it yes is the 240-day rule. It's old, it's narrow, and it's easy to get wrong.

The timing matters. On October 14, 2026, DHS published a proposed rule under docket USCIS-2026-0529 that would delete the regulation requiring USCIS to defer to its own earlier approval of a petition in extension cases. As the proposal has been reported, it would reach every Form I-129 extension, including H-1B, L-1, O-1 and TN cases. Comments are due November 13, 2026. It is a proposal, not a final rule, so current processing has not changed yet.

Why should an H-1B worker care about a proposal about deference? Because the 240-day bridge only works while the extension is pending. If USCIS denies the petition, the bridge closes. Anything that makes extensions harder to approve puts more weight on that bridge, even before the rule itself changes.

What the 240-day rule actually says

The rule lives in the employment authorization regulations at 8 CFR 274a.12(b)(20). In plain terms, a worker in H-1B status whose employer filed a timely extension petition can keep working for that employer for up to 240 days while USCIS decides the case.

The clock starts from the expiration date of the I-94 the worker currently holds. Authorization ends at whichever comes first: 240 days after that date, or the day USCIS decides the extension. A denial ends it on the day you are notified. An approval, of course, settles the question, because the approved extension gives you normal work authorization again.

Notice what the rule does not say. It doesn't extend your status forever, it doesn't create a new work permit, and it doesn't turn a late filing into a timely one. It's a bridge, and a bridge has two ends.

Who actually qualifies?

Four conditions do most of the work. The extension petition has to be filed and received before the I-94 expires. The employer has to be the same one that sponsored the current H-1B. The position has to be the same one covered by the status. And the worker has to be physically in the United States when the bridge is needed.

The same-employer requirement is where many people get tripped up. If you have already moved to a new company, you are no longer asking about a simple extension. A transfer runs on a different path, and the answer depends on how the new petition was filed and whether it has been approved. More on that below.

The timeliness requirement is strict. If the petition reaches USCIS after your I-94 has expired, you can't use the bridge to cover that gap. Keep the I-797 receipt notice as proof of the filing date. That receipt is the document you will point to if anyone asks.

What happens on day 241?

Once 240 days pass without a decision, work authorization under the bridge ends, even though the case is still pending. That's the part that surprises people, because the pending case keeps going and nobody sends a reminder.

The good news is that losing work authorization after 240 days does not by itself force you to leave the country. The common reading among immigration practitioners is that a worker may remain in the United States while a timely filed extension is still pending, even though they can no longer work under the bridge. In practice you are in a holding pattern, and every day you can't work matters to your employer and your household.

This is why premium processing comes up so often. A premium request shortens the decision timeline and, with it, the window in which you depend on the bridge. Check current premium processing eligibility and fees before you act, because both can change.

The travel trap

Of everything in this article, this is the part most likely to cost someone a job or a year. Leaving the United States while an extension is pending can turn a manageable wait into a long one.

The reason is consular. If you depart while the petition is pending, you will usually need a valid visa stamp to come back, and an extension approval on paper doesn't make that stamp easy to get. Many practitioners say the safe default is to avoid travel during the 240-day window unless it truly can't be avoided, and to plan any trip with counsel if it can't.

Check your I-94 and your visa stamp dates before any trip, and don't assume the bridge will look the same when you come back.

Does the h1b 240 day rule still apply in 2026?

As far as I can tell from the sources available to me this week, yes. The core 240-day provision has not been changed by a 2026 rule. The recent DHS action that extends a similar bridge is a separate final rule covering H-1B1, E-3 and CW-1 nonimmigrants. Those are different categories, and that rule does not rewrite the H-1B text.

The proposed deference rule is the one to watch. It doesn't change the 240-day period itself. It changes how much weight USCIS gives its own earlier approvals when it reviews an extension, and that could mean more requests for evidence and more cases that sit in the pending pile. Once a final version exists, read the Federal Register text rather than the commentary about it.

Transfers are the part nobody agrees on

If you are moving to a new employer, the 240-day rule is not the tool you want to lean on. Transfers have their own portability rules, and the forums disagree about how long a pending transfer lets someone keep working.

Some practitioners read AC21 portability as letting a worker continue on a pending transfer for as long as the new petition is pending. Others argue the 240-day language covers only same-employer extensions, which means a transfer has no clean bridge at all. Treat that question as open, not settled, and have a lawyer look at your specific petition.

What to do this month if your extension is pending

Start with paperwork. Find the I-797 receipt for your extension and write down the receipt date. Find the expiration date on your I-94. Those two dates tell you whether the filing was timely and when the 240-day clock runs out. Count the days on a calendar yourself rather than trusting a random online calculator.

Then talk to your employer about the timeline. If day 240 is getting close, ask whether premium processing is an option and whether the company has any work it can keep you in that doesn't depend on the bridge. Keep copies of the petition, your pay stubs and the receipt together in one folder. If USCIS sends a request for evidence, respond quickly and completely.

Finally, don't travel on autopilot. Confirm the timeline with an immigration lawyer before any trip. This article is informational only and isn't legal advice. The rules around H-1B extensions turn on specific facts, and a careful read of your own file beats a forum post every time.