H-1B — Specialty Occupation Worker
What Is the H-1B?
The H-1B is the primary work visa for foreign nationals in professional, degree-level occupations. It allows US employers to hire workers in specialty occupations — positions that require at least a bachelor's degree in a field directly related to the job duties. H-1B covers software engineering, finance, accounting, architecture, medicine, law, scientific research, and many other professional fields.
H-1B is subject to an annual numerical cap and requires a randomized lottery. Certain employers — universities, nonprofit research organizations, and government research entities — are cap-exempt and can file H-1B petitions at any time without going through the lottery.
Who Is It For?
H-1B is for any foreign national of any nationality who has a job offer from a qualifying US employer in a specialty occupation and holds at least a bachelor's degree in the relevant field. There are no country restrictions. The employer must be willing to sponsor the petition and pay the applicable fees.
Eligibility
- Position must be a specialty occupation — requiring at least a bachelor's degree in a directly related field
- Employer must have a legitimate ongoing employer-employee relationship
- Employer must pay at or above the prevailing wage for the occupation and location
- Must hold a US bachelor's degree or higher — or a foreign equivalent — in the specific specialty required for the position
- Open to workers from all countries; no nationality restriction
- Must be selected in the H-1B lottery if the position is cap-subject
Application Process
Validity and Extensions
Initial H-1B status is valid for 3 years and can be extended in 3-year increments with no statutory maximum on total duration. Once an H-1B holder has been in the US for 6 years in H or L status, further extensions are only possible under AC21: either the employer's PERM labor certification has been pending for at least 365 days, or an I-140 has been approved. In those cases, extensions are granted in 1-year (PERM-based) or 3-year (I-140-based) increments, also without a cap on total duration.
TN — USMCA Professional
What Is the TN Visa?
The TN (Trade NAFTA) visa was established under NAFTA and continues under the United States-Mexico-Canada Agreement (USMCA). It allows Canadian and Mexican citizens to work in the United States in a defined list of qualifying professional occupations. There is no annual cap, no lottery, and — for Canadians — no advance application required. TN is employer-specific and job-specific: it is tied to the specific employer and role listed at the time of admission, and changing employers or significantly changing job duties requires a new TN application.
Who Is It For?
TN is for Canadian or Mexican citizens who have a job offer from a US employer in one of the approximately 63 occupations listed on the USMCA professional schedule. Permanent residents of Canada or Mexico are not eligible — only citizens. Self-employment and independent contracting arrangements are not permitted under TN.
Eligibility
- Must be a Canadian or Mexican citizen
- Job must be in an occupation listed on the USMCA professional schedule
- Must hold the specific educational or licensure credentials required by that occupation (typically a bachelor's degree)
- Must have a specific job offer from a US employer
- Must provide a detailed offer letter specifying the TN occupation category, duties, salary, and duration
- Must confirm the position meets the USMCA occupation's credential requirements
- No LCA or prevailing wage filing is required
- TN is not available for self-employment or independent contractor relationships
Qualifying USMCA Occupation Categories
- Engineer (all disciplines)
- Computer Systems Analyst
- Chemist / Physicist
- Mathematician / Statistician
- Geologist / Geophysicist
- Urban Planner
- Accountant (CPA or equiv.)
- Economist
- Financial Analyst
- Management Consultant
- Market Research Analyst
- Graphic Designer
- Dentist / Dental Assistant
- Pharmacist
- Dietitian / Nutritionist
- Medical Lab Technologist
- Occupational Therapist
- Psychologist
Application Process
Validity and Extensions
TN status is granted for an initial period of 3 years. There is no statutory maximum — TN can be renewed indefinitely in 3-year increments as long as the individual continues working in a qualifying USMCA occupation for a US employer. Canadians renew by presenting updated documentation at a port of entry or by having their employer file an I-129 petition with USCIS. Mexicans renew by applying for a new TN visa at a US consulate, which then allows a fresh 3-year admission at the port of entry.
E-3 — Australian Specialty Occupation
What Is the E-3?
The E-3 visa was established by the US-Australia Free Trade Agreement of 2004. It is available exclusively to Australian citizens working in specialty occupations — positions that require at least a bachelor's degree in a directly related field. The E-3 has its own numerical cap of 10,500 per year, which has never been exhausted since the visa was created. In practice, this makes the E-3 a reliably accessible visa that does not require a lottery and can be pursued at any time of year.
Who Is It For?
E-3 is for Australian citizens who have a job offer from a US employer in a specialty occupation. It is not available to Australian permanent residents who are nationals of other countries — only Australian citizens qualify. The specialty occupation standard requires that the position typically demand a bachelor's degree in a field that is directly related to the job duties being performed.
Eligibility
- Must be an Australian citizen
- Must have a job offer in a specialty occupation requiring at least a bachelor's degree in a related field
- Must hold the required credentials (bachelor's degree or equivalent)
- Must receive a wage at or above the prevailing wage for the role and location
- Must file and obtain a certified LCA from DOL before the applicant's interview
- LCA must reflect the actual worksite location(s) and the prevailing wage determination
- Employer provides the certified LCA and offer letter to the applicant for the consular interview
- No I-129 petition with USCIS is required for the initial E-3 application
Application Process
Validity and Extensions
E-3 is initially valid for 2 years. It can be extended indefinitely in 2-year increments — there is no statutory maximum on total duration. The most common approach is to apply for a new E-3 visa at a US consulate abroad, which requires the employer to obtain a new certified LCA (LCAs are valid for 2 years and must be current at the time of each renewal). Alternatively, the employer can file an I-129 petition with USCIS to extend E-3 status from within the United States without requiring the worker to travel abroad.
H-1B1 — Chile & Singapore FTA
What Is the H-1B1?
The H-1B1 was created by the US-Chile Free Trade Agreement and the US-Singapore Free Trade Agreement, both of which took effect in 2004. It reserves a dedicated portion of the H-1B numerical cap for nationals of these two countries: 1,400 per year for Chilean nationals and 5,400 per year for Singaporean nationals. The H-1B1 cap has never been exhausted, making it a reliably accessible pathway that requires no lottery and no USCIS petition. The specialty occupation standard is the same as H-1B — the position must require at least a bachelor's degree in a directly related field.
Who Is It For?
H-1B1 is for Chilean or Singaporean citizens (not permanent residents of other countries) who have a US employer job offer in a specialty occupation. Agricultural labor and fashion modeling are explicitly excluded from H-1B1 eligibility. All other specialty occupation categories that qualify under H-1B are generally available under H-1B1.
Eligibility
- Must be a Chilean or Singaporean citizen
- Job offer must be in a specialty occupation requiring at least a bachelor's degree in a related field
- Must hold the required credentials
- Must receive a wage at or above the prevailing wage for the role and location
- Agricultural labor and fashion modeling are excluded
- Must obtain a certified LCA specifying the H-1B1 classification
- Must provide an offer letter with role, duties, compensation, and duration
- No I-129 filing required for the initial application
- A new LCA is required for each renewal cycle
Application Process
Validity and Extensions
H-1B1 is initially valid for 18 months. It can be extended indefinitely in 18-month increments with no statutory maximum on total duration. Renewals require the employer to obtain a new certified LCA. Extensions are processed either by the worker applying for a new H-1B1 visa at a US consulate abroad (most common) or by the employer filing an I-129 extension petition with USCIS from within the United States.
O-1 — Extraordinary Ability or Achievement
What Is the O-1?
The O-1 visa is for individuals who have demonstrated extraordinary ability in their field at a sustained national or international level. O-1A covers the sciences, education, business, and athletics; O-1B covers the arts, motion picture industry, and television. O-1 has no cap, no lottery, and can be filed at any time of year, making it one of the most flexible professional work visas available. A US employer or authorized agent must sponsor the petition.
Who Is It For?
O-1A is for professionals who have achieved a level of expertise placing them among the small percentage at the very top of their field — researchers, scientists, engineers, executives, and athletes with documented, sustained achievement. O-1B is for artists, entertainers, and media professionals who have demonstrated a high level of distinction in their field.
Eligibility — O-1A Evidentiary Criteria
The applicant must demonstrate a major internationally recognized award (such as a Nobel Prize or Olympic medal), OR meet at least 3 of the following 8 criteria:
- Awards: Nationally or internationally recognized prizes for excellence in the field
- Membership: Membership in associations requiring outstanding achievement, judged by recognized experts
- Press: Published material about the individual in professional or major trade publications or other major media
- Judging: Participation as a judge of the work of others in the same or allied field
- Original contributions: Original scientific, scholarly, or business-related contributions of major significance
- Authorship: Scholarly articles in professional journals or other major media
- Critical role: Employment in a critical or essential capacity at organizations with a distinguished reputation
- High salary: High salary or remuneration relative to others in the field
Validity and Extensions
O-1 is initially approved for the period necessary to complete the event, activity, or employment, up to a maximum of 3 years. After the initial period, O-1 is extended in 1-year increments, indefinitely, for as long as qualifying work continues and the employer or agent continues to file extension petitions. There is no statutory cap on the total number of years an individual may hold O-1 status.
L-1 — Intracompany Transferee
What Is the L-1?
The L-1 visa allows multinational companies to transfer employees from a foreign parent, affiliate, subsidiary, or branch to their US operations. The transferring employee must have worked for the company outside the United States for at least one continuous year within the past three years in a qualifying managerial, executive, or specialized knowledge capacity. L-1 has no cap, no lottery, and allows dual intent — holders can actively pursue permanent residence without jeopardizing their nonimmigrant status.
Who Is It For?
L-1 is for employees of multinational companies who are being transferred to fill a qualifying role at a US affiliate. The US and foreign entities must have a qualifying corporate relationship (parent, affiliate, subsidiary, or branch), and both must be actively doing business throughout the transfer period. It is not available to individuals being hired into a company for the first time — prior qualifying employment with the same corporate family outside the US is a firm requirement.
L-1A vs. L-1B
- Must manage an organization, department, subdivision, function, or key staff
- Managers supervise professional employees or manage an essential function with wide latitude
- Executives direct the management of the organization or a major component
- Maximum 7 years; direct path to EB-1C green card without PERM
- Must have special knowledge of the company's products, services, research, equipment, techniques, or management that is not easily transferable
- “Advanced knowledge” means knowledge that is particularly complex or highly developed compared to general industry standards
- Maximum 5 years; green card typically requires PERM labor certification
Validity and Extensions
L-1A is granted for 3 years initially (1 year for a new US office) and extended in 2-year increments up to a maximum of 7 years total. L-1B is also granted for 3 years initially (1 year for a new office) with 2-year extensions, up to a maximum of 5 years total. After reaching the applicable maximum, the individual must depart the US and remain outside for at least 1 continuous year before a new L-1 petition is approvable. Any time in H or L status counts toward the respective 7- or 5-year aggregate.
H-2A — Temporary Agricultural Worker
What Is the H-2A?
H-2A allows US agricultural employers and associations to bring foreign nationals to the United States to fill temporary or seasonal agricultural jobs when qualified US workers are not available. The program has no annual cap. It is entirely employer-driven: the employer must demonstrate US workers are unavailable, comply with wage requirements, provide free housing and transportation, and take on significant obligations for the workers' welfare during the contract period.
Who Is It For?
H-2A is for workers from countries that the Department of Homeland Security has designated as eligible to participate in the H-2A program. DHS publishes and updates this list annually. Workers are brought in for the specific duration of the agricultural contract, which must be temporary or seasonal in nature. H-2A covers farm work including harvesting fruits and vegetables, tobacco, grain, livestock operations, Christmas trees, and other agricultural commodities.
Key Employer Obligations
- Must pay the Adverse Effect Wage Rate (AEWR) — a DOL-set minimum wage that varies by state and is updated annually
- Must offer US workers the same wages and conditions offered to H-2A workers
- Must provide workers' compensation insurance or equivalent coverage
- Must provide free housing to workers who cannot reasonably return home daily
- Must pay for transportation between housing and worksite
- Must pay inbound transportation costs after completing 50% of the work contract
- Must pay return transportation costs upon completion of the contract
Validity and Extensions
H-2A status is valid for the period of the agricultural labor certification, generally up to 1 year. Extensions are available in 1-year increments for a maximum of 3 consecutive years total. After the 3-year aggregate, the worker must depart the US and remain outside for an uninterrupted period of at least 3 months before a new H-2A petition can be approved. Time in H-2B status also counts toward the 3-year aggregate for H-2A purposes.
H-2B — Temporary Non-Agricultural Worker
What Is the H-2B?
H-2B allows US employers to bring foreign nationals to fill temporary non-agricultural positions when qualified US workers are unavailable. Industries commonly using H-2B include hospitality, resort operations, landscaping, groundskeeping, construction, amusement parks, ski resorts, and seafood processing. Unlike H-2A, H-2B has a statutory annual cap of 66,000 visas split equally between the two halves of the fiscal year. The cap is regularly reached, and employers must plan and file early to secure available numbers.
Who Is It For?
H-2B is for workers from DHS-designated eligible countries who are being hired for positions that are genuinely temporary in nature. The employer must demonstrate one of four temporary need bases: seasonal need (work that recurs at the same time each year), peak-load need (a short-term staffing surge that cannot be met with permanent employees), one-time occurrence (a unique project creating a temporary need), or intermittent need (a recurring but unpredictable need that does not justify permanent hiring).
Validity and Extensions
H-2B status is valid for the period of the approved labor certification, generally up to 1 year. Extensions are available in 1-year increments for a maximum of 3 consecutive years total. After reaching the 3-year aggregate, the worker must depart the US and remain outside for at least 3 months before a new H-2B petition. Time in H-2A status counts toward the H-2B 3-year aggregate, and vice versa.
H-3 — Trainee or Special Education Visitor
What Is the H-3?
H-3 is a narrowly defined visa for foreign nationals invited to the US specifically to receive training that is not available in their home country, or to participate in a structured special education exchange program. The training program must be designed to develop skills the trainee will use outside the US, and must not primarily serve the employer's production needs. H-3 is not a substitute for H-1B or other work visas — it is appropriate only when the individual's primary purpose is genuine training, not productive employment.
Who Is It For?
H-3 is used for formal corporate training programs (such as transferring a foreign employee to a US parent company for structured internal training unavailable abroad), vocational or technical training requiring US equipment or methods, and structured special education exchange programs working with children who have physical, mental, or emotional disabilities. Graduate medical education and training programs are explicitly excluded and require different visa arrangements.
Key Requirements
- Training must not be available in the trainee's home country
- Must not be designed primarily to provide productive employment for the sponsoring organization
- Must benefit the trainee in their career outside the US
- Must have a structured training plan with clear objectives, phases, and supervision
- Must intend to use training outside the US upon completion
- Will not fill a position in the organization or replace a US worker
- Productive employment is not the primary purpose of the stay
- Special education category requires participation in a recognized structured program for children with disabilities
R-1 — Temporary Religious Worker
What Is the R-1?
R-1 allows foreign nationals to work in the United States temporarily as religious workers for qualifying nonprofit religious organizations. It covers three types of qualifying religious work: ministers of religion (individuals authorized to conduct religious worship and perform other ministerial duties); religious vocation workers (individuals committed to a religious way of life through a formal commitment, such as monks, nuns, and brothers); and religious occupation workers (individuals engaged in occupations related to traditional religious functions, such as religious instructors, counselors, cantors, liturgical workers, hospital chaplains, and missionaries).
Who Is It For?
R-1 is for foreign nationals who have been a member of the petitioning religious denomination for at least the 2 years immediately preceding the petition and who are coming to work in a qualifying religious capacity for a bona fide nonprofit religious organization. Commercial religious businesses do not qualify. The organization must have IRS tax-exempt status and must demonstrate the worker's qualifying religious role. Self-employment is not permitted.
Eligibility
- Must have been a member of the same religious denomination as the petitioning organization for at least 2 years before the petition
- Must be coming to work as a minister, in a religious vocation, or in a religious occupation
- Must work for a qualifying nonprofit religious organization — not self-employed
- Must be a bona fide nonprofit religious organization with IRS tax-exempt status (or an affiliated nonprofit)
- Must have an ongoing need for the worker's services during the petition period
- Must demonstrate the role is a qualifying religious occupation, vocation, or ministerial function
Validity and Extensions
R-1 is initially valid for up to 30 months (2.5 years). A single extension of up to 30 additional months is available, for a maximum total of 5 years. After reaching 5 years, the individual must depart the United States and remain outside the country for an uninterrupted period of at least 1 year before USCIS will approve a new R-1 petition. All time spent in R-1 status counts toward the 5-year aggregate regardless of departures and re-entries during that period. R-1 holders seeking permanent residence may transition to an EB-4 special immigrant religious worker green card.