Form I-129S

Your company already holds an approved blanket L petition, which means the hardest part of the L-1 process is behind you. What comes next is a per-employee filing that decides whether each transfer actually happens on schedule.

The State Department issued 71,799 L-1 visas in fiscal year 2024, and 96.1% of L-1 applications processed that year were approved, but those numbers hide how much rides on evidence assembled long before anyone reaches a consular window.

Form I-129S is the document that carries that evidence. This guide covers what the petition does, who qualifies to use it, where to file depending on your employee's nationality and location, what it costs, and how long approval takes.

What is Form I-129S?

Form I-129S is the petition your company files to classify one specific employee as an L-1 intracompany transferee under a blanket L petition your organization already holds. Its official title is the Nonimmigrant Petition Based on Blanket L Petition, and USCIS (U.S. Citizenship and Immigration Services) tracks blanket L cases under the classification code LZ.

The distinction that matters to you is what each filing actually covers. The blanket petition itself is filed on Form I-129 and establishes that your U.S. entity and its listed parents, branches, subsidiaries, and affiliates are qualifying organizations. It says nothing about any individual employee.

The I-129S does the reverse. It says nothing about corporate structure and everything about one person: their job abroad, their proposed U.S. role, and whether both meet the L-1 standard.

That split is the entire point of the blanket program. Once USCIS has pre-approved your corporate family, you do not have to prove those relationships again for the life of the blanket approval. Every subsequent transfer becomes a lighter, faster filing.

Who qualifies under a blanket L petition

You are working with two separate eligibility tests here, and passing one does not help you with the other. The blanket approval covers your organization. The I-129S covers your employee, and USCIS or a consular officer evaluates that employee on their own record.

Your organization qualifies for blanket L certification under 8 CFR 214.2(l)(4) if it meets all of the baseline conditions plus at least one of the size thresholds:

Your employee qualifies separately. They must have worked for a qualifying organization abroad for one continuous year within the three years preceding the filing, in an executive, managerial, or specialized knowledge professional capacity, and they must be coming to fill a qualifying role in the United States.

Important note: the blanket route is narrower than the individual L-1 route for specialized knowledge cases. Under 8 CFR 214.2(l)(1)(ii)(E), a specialized knowledge professional must hold specialized knowledge and be a member of the professions, which generally means a bachelor's degree or the equivalent. An employee with genuine specialized knowledge but no degree cannot be classified under your blanket approval. That transfer needs an individual L-1 petition on Form I-129 instead, so screen for it before you build the file.

Where to file: three routes to L-1 classification

Where the petition goes depends entirely on where your employee is and what passport they hold. You are choosing between three routes, and picking the wrong one costs weeks.

• Employee abroad who needs a visa: you complete the petition as the petitioning employer and your employee presents it to a consular officer at their L-1 interview. Consular posts still endorse the paper form, so most practitioners send the employee with three copies of the completed petition plus the blanket approval notice.
• Canadian citizens: because they are visa-exempt, your employee can present the completed petition directly to a CBP (U.S. Customs and Border Protection) officer at a Class A port of entry on the U.S. and Canada land border, or at a pre-clearance or pre-flight inspection station in Canada. You can also file with the USCIS service center that approved the blanket instead.
• Employee already in the United States: you file Form I-129 together with the I-129S at the USCIS service center that approved the blanket petition. This applies to both change of status requests and extension of stay requests, and USCIS may reject an I-129 that arrives without the accompanying I-129S. Extension filings must also include a copy of the beneficiary's previously approved I-129S.

One procedural change is worth knowing if your last blanket filing predates it. Since August 3, 2023, USCIS no longer returns a stamped paper form when it approves a blanket L case. It issues a separate I-129S approval notice instead, and that notice is the endorsement your employee uses for the visa application and for admission.

Consular posts were not affected by the change and continue to endorse the form itself.

How to file Form I-129S: step by step

Once you know your route, the sequence is the same. Work through it in order, because a gap at step two is much cheaper to fix than a gap at step six.

1. Confirm the blanket approval is live and covers the entity. Check the expiration date on the blanket I-797 and confirm the specific subsidiary or affiliate employing your transferee is named on the approved petition. Newly acquired entities are not automatically covered.
2. Screen the employee against the qualifying capacity rules. Verify one continuous year of employment abroad within the last three years, and confirm professional status separately if the transfer is a specialized knowledge case.
3. Use the current form edition. USCIS lists the 01/20/25 edition on the USCIS form page. Editions change, so confirm the date at the bottom left of the form before you file rather than reusing a saved PDF.
4. Assemble the required initial evidence. You need a copy of the blanket L approval notice and a letter from the foreign qualifying employer detailing the employee's dates of employment, job duties, qualifications, and salary. The letter has to establish the one continuous year in a qualifying capacity, not just confirm employment.
5. Complete the export control certification in Part 6. You are certifying that you reviewed the Export Administration Regulations and the International Traffic in Arms Regulations and determined whether a license is required before releasing controlled technology to the employee.
6. Sign it properly. USCIS will not accept a stamped or typewritten name in place of a signature, and the signatory must have authority to bind the entity. Unsigned petitions are rejected outright.
7. Route the package and pay the applicable fees. Send each required fee as a separate check or money order, and include certified English translations for any foreign language document.

What it costs to file under a blanket L petition

Your budget for a blanket transfer is not obvious from the form itself, because the petition carries no base filing fee. The costs sit in surcharges, and which ones apply depends on your headcount, your employee's nationality, and whether you expedite.

Two details catch employers off guard. The $500 surcharge is charged whether the visa is issued or refused, so a denial does not get it back.

The $4,500 fee is not triggered again when an employee reuses an existing petition after losing a passport, but filing a new petition, including the extension filing after the initial three years, does trigger it fresh.

Lighthouse does not charge additional fees for responding to Requests for Evidence, which is worth factoring in when you compare quotes across providers.

Processing times, validity, and what happens after approval

How long you wait depends on which route you took, and the two routes behave very differently. If your employee is applying abroad, there is no USCIS adjudication at all. A consular officer decides at the interview, and there is no administrative appeal from a consular refusal.

If USCIS is adjudicating, standard processing varies by service center and workload. Premium processing is available for the LZ classification and commits USCIS to act within 15 business days, though acting means a decision, a Request for Evidence, or a Notice of Intent to Deny, not an approval.

After approval, three validity periods run at once and they do not always match:

• The blanket approval: initially valid for three years, and extendable indefinitely as long as your organization keeps meeting the eligibility criteria.
• The individual petition: valid for up to three years, and it cannot outlast the blanket approval it sits under.
• The I-94: this is the one that governs. CBP grants the actual period of admission at entry, and it can be shorter than the petition validity.

If the I-94 expires before the petition does, you must file an extension request, file for another benefit that keeps the employee in status, or have them depart and seek readmission. Dependents in L-2 status have to extend separately using Form I-539. L-1A holders max out at seven years total, and L-1B holders at five.

Reassignment inside your corporate family is more flexible than employers expect. An employee admitted under the blanket approval can move to any organization listed on it during their authorized stay without a new filing, provided the duties stay essentially the same. Different duties require a new petition filed with the service center that approved the blanket.

Mistakes that slow down a blanket L transfer

Most delays on blanket cases are self-inflicted and predictable. You can eliminate nearly all of them at the file-building stage:

• Sending a non-professional as a specialized knowledge transferee: this is the single most common blanket L misstep. Route the case to an individual L-1B petition instead.
• Submitting a letter about the company rather than the person: the foreign employment letter needs specific dates, duties, qualifications, and salary tied to the individual, not a description of the business unit.
• Assuming a new acquisition is covered: entities have to be named on the approved blanket petition. Adding one requires amending or renewing the blanket approval first.
• Combining fees into one payment: each fee must be submitted as a separate check or money order made payable to U.S. Department of Homeland Security.
• Treating the approval notice as a visa: evidence of petition approval is not a visa. Unless your employee is visa-exempt, they still need the L-1 visa stamp before seeking admission.
• Letting the blanket approval lapse: individual petitions cannot extend past the blanket's validity, so an expiring blanket quietly caps every transfer underneath it.

Getting the filing right the first time

The blanket L program exists to make repeat transfers fast, and it does exactly that once your evidence standard is set. Build one strong template for the foreign employment letter, screen every specialized knowledge case for professional status before you start, and track your blanket expiration date as carefully as you track individual petition dates.

How Lighthouse helps you move employees under a blanket L

Blanket L filings look straightforward until you reach the evidence. The foreign employment letter has to establish one continuous year in a qualifying capacity, and for specialized knowledge transfers it has to establish professional status as well.

Lighthouse prepares L-1 filings for startup and tech employers, including cases filed under an approved blanket petition. Your case team assembles the foreign employment evidence, drafts the petition, and coordinates the consular or service center route, with attorney review included in every case.

Applications are prepared in under three weeks, which matters when a start date is already committed and a delayed transfer means a role sitting empty. If you are unsure whether an employee fits your blanket approval or needs an individual petition, that gets resolved before anything is filed.

Start your L-1 evaluation today.

Frequently asked questions on Form I-129S

Is there a filing fee for the petition?

There is no base filing fee. Costs come from the $500 Fraud Prevention and Detection Fee, the $4,500 Public Law 114-113 fee if your headcount and status mix trigger it, consular fees, and premium processing if you elect it.

Can a specialized knowledge employee use the blanket process?

Only if they are also a professional, which generally means holding a bachelor's degree or the equivalent. Specialized knowledge employees who are not professionals need an individual L-1B petition on Form I-129.

How long is an approved petition valid?

Up to three years, and it cannot extend beyond the validity of the blanket approval it relies on. Your employee's actual authorized stay is set by their I-94, which may be shorter.

Do Canadian employees still need this petition?

Yes. Canadians are visa-exempt, so they skip the consulate, but they still present the completed petition and supporting evidence to a CBP officer at a Class A port of entry or a pre-clearance station in Canada.

Is premium processing available?

Yes, for filings adjudicated by USCIS, using Form I-907. As of March 1, 2026, the fee is $2,965 and USCIS commits to acting within 15 business days. Premium processing has no bearing on cases decided by a consular officer abroad.

What if my employee is already in the United States on another status?

You file Form I-129 together with this petition at the service center that approved your blanket, requesting a change of status. The same pairing applies to extension of stay requests, with a copy of the previously approved petition included.