Last reviewed October 7, 2026 · By the NYBACS advisory team
Short answer
L-1A is for employees who will primarily manage or direct a US operation, department or essential function, and allows up to seven years in the US. L-1B is for employees whose value lies in special or advanced knowledge of the company's own products, processes or procedures, and allows up to five years. Both require the same qualifying corporate relationship and one continuous year of qualifying employment abroad.
Key takeaways
- L-1A turns on what the person primarily does — managing people, managing an essential function, or directing the organization — not on their job title.
- L-1B requires knowledge that is distinct or uncommon in the industry, or advanced compared with others inside the employer — general technical skill is not enough.
- The maximum stay is 7 years for L-1A and 5 years for L-1B; an L-1B promoted to a managerial role must hold it for at least 6 months to qualify for the 7-year limit.
- An L-1B worker placed mainly at a client's site must stay under the petitioner's control and supervision, and the work must need knowledge specific to the petitioner.
- L-1A aligns more directly with the EB-1C multinational manager green card category; L-1B holders usually need a different green card route.
Side-by-side comparison
| L-1A | L-1B | |
|---|---|---|
| Who it covers | Managers (personnel or function) and executives | Employees with specialized knowledge of the employer's interests |
| Core test | Primarily managerial or executive duties | Special or advanced company-specific knowledge |
| Maximum stay | 7 years | 5 years |
| New office petition | Prior year abroad must be managerial or executive; must show the office can support a managerial role within a year | Must show premises and financial ability to pay the employee and start business |
| Work at client sites | No special restriction | Must be controlled and supervised by the petitioner; client-site "labor for hire" is not allowed |
| Blanket L | Managers and executives | Only specialized knowledge professionals |
| Natural green card link | EB-1C multinational manager or executive | Usually PERM-based categories |
The year of employment abroad and the US job do not have to be in the same category. A specialized knowledge engineer abroad can be transferred as a US manager, and vice versa — the main exception is a new-office L-1A, where the year abroad must itself have been managerial or executive.
What USCIS means by manager and executive
The statutory definitions are narrower than everyday job titles. USCIS recognizes three L-1A profiles:
- Personnel manager — primarily supervises and controls the work of other supervisory, professional or managerial staff, with authority to hire and fire or recommend those actions. Supervising non-professional staff as a first-line supervisor does not qualify.
- Function manager — primarily manages an essential, clearly defined function (for example, finance or product) at a senior level, even without direct reports. The petition must show who actually performs the function's day-to-day work.
- Executive — directs the management of the organization or a major component, sets goals and policies, exercises wide discretion and receives only general supervision from senior executives, the board or shareholders.
USCIS does not decide this by headcount alone, but where staffing levels are used, it must consider the reasonable needs of the organization in light of its purpose and stage of development. A detailed breakdown of daily duties, with approximate time percentages, carries more weight than a title such as "Director" or "CEO".
What counts as specialized knowledge
Specialized knowledge is either:
- Special knowledge of the petitioning organization's products, services, research, equipment, techniques or management and their application in international markets that is distinct or uncommon compared with the industry generally; or
- Advanced knowledge of the organization's own processes and procedures that is greatly developed compared with what is generally found within the employer.
The classic L-1B candidate has built or customized a proprietary platform, methodology or production process and cannot easily be replaced by a US hire without long training. A strong file explains what the knowledge is, how it was gained (often through internal training or years on a specific product), how few people hold it, and why the US operation needs it now. Generic skills — a programming language, an industry certification, ordinary product familiarity — are weak foundations on their own.
How the choice affects your business planning
The classification is not just a label; it changes what the US business must look like.
- Org charts and hiring. An L-1A case is easier to support when the US entity has, or credibly plans, staff or contractors who perform the operational work. An L-1B case focuses less on headcount and more on the project or product the employee will support.
- Time horizon. If the person may need more than five years in the US, L-1A — or a planned promotion from L-1B to a managerial role, approved by USCIS, at least 6 months before the five-year mark — matters early.
- Client-site work. Service companies that place staff at customer locations need contracts and supervision arrangements that keep L-1B employees under the petitioner's control.
- Moving between categories. A change from L-1B to L-1A (or the reverse) requires an amended, new or extended petition approved at the time of the change.
Which classification fits a particular employee is a legal judgment for immigration counsel. The business side — job descriptions grounded in real reporting lines, payroll that matches the org chart, and contracts that show who supervises whom — is where preparation pays off.
Common mistakes to avoid
- Labelling a hands-on specialist as a "manager" for the longer L-1A limit when most of their day is spent doing the work rather than managing it.
- Describing L-1B knowledge in terms any competent industry professional would share, such as a common software stack.
- Submitting an org chart showing subordinates who are not on payroll or under contract.
- Promoting an L-1B employee internally without filing an amended petition, then relying on the 7-year L-1A limit.
- Placing an L-1B employee at a client site where the client, not the petitioner, directs the daily work.
NYBACS 360° support
How NYBACS helps
- Builds US and foreign organization charts that match payroll, contractor agreements and reporting lines, so the role your attorney describes is backed by records.
- Sets up payroll and contractor bookkeeping that shows who performs operational work in the US entity.
- Assembles internal training records, project histories and product documentation your attorney can use to evidence specialized knowledge.
- Reviews intercompany service and client contracts for consistency with the supervision arrangements described in the petition.
Frequently Asked Questions
Can someone with no direct reports qualify for L-1A?
Yes, as a function manager, if they primarily manage an essential function at a senior level and others perform the function's routine work. The petition needs to identify the function precisely and show the share of time spent managing rather than performing it.
Can I switch from L-1B to L-1A while in the US?
Yes, if the new role is genuinely managerial or executive and USCIS approves an amended, new or extended petition reflecting the change. To benefit from the 7-year limit, the person must have held the managerial or executive role for at least 6 months.
Is L-1B available for a brand-new US office?
Yes. The new-office L-1B rules require evidence of secured premises, that the US entity is or will be a qualifying organization, and that the petitioner can pay the employee and start doing business. The first approval is limited to one year.
Does L-1B require a degree?
Not for an individual L-1B petition — the test is specialized knowledge, not a degree. Under a blanket L petition, however, only specialized knowledge professionals qualify, which generally implies a professional-level role.
