Hiring International Employees: A US Employer's Complete Guide

International hiring for US employers falls into two fundamentally different categories that require completely different approaches. The first is hiring a foreign national to work in the United States — which requires navigating US immigration law to establish work authorization. The second is hiring someone who will remain in their home country and work remotely — which requires navigating that country's employment and payroll law. Many HR leaders conflate these two scenarios, leading to significant compliance exposure. This guide covers both clearly.

Scenario 1: Hiring a Foreign National to Work in the US

When a candidate does not have US work authorization, they need a visa sponsored by the employer or self-sponsored immigration status. US work authorization options include:

H-1B Visa: The Standard Professional Work Visa

The H-1B is the most common employer-sponsored work visa for professional roles requiring at least a bachelor's degree in a specialty field. Key facts:

• Annual cap. Congress limits new H-1B visas to 65,000 per fiscal year, plus 20,000 additional for US master's degree holders. Demand vastly exceeds supply, so USCIS uses a computer-generated lottery.
• Lottery timing. The lottery registration window is typically in March. Selected applicants can file petitions from April 1 for an October 1 start date.
• Duration. Initial approval for 3 years, renewable in 3-year increments. Maximum of 6 years without green card sponsorship underway.
• Prevailing wage requirement. H-1B employers must pay at least the prevailing wage for the role in the work location, as determined by the Department of Labor.
• Premium processing. An additional $2,805 fee (2026 rate) reduces USCIS processing to 15 business days.

Other Common Work Visa Options

• L-1 (Intracompany Transferee). For employees of a foreign affiliate who are being transferred to a US entity. Requires the candidate to have worked for a related foreign entity for at least 1 year in the past 3 years. No cap. L-1A (managers/executives) can lead directly to EB-1C green card.
• TN (USMCA). Available only to Canadian and Mexican nationals in specific professional categories listed in the USMCA agreement. No cap, relatively fast to obtain, valid for 3 years and renewable.
• O-1 (Extraordinary Ability). For individuals with extraordinary ability in sciences, arts, education, business, or athletics. High evidentiary threshold but no cap and no lottery.
• E-3 (Australian nationals). Similar to H-1B but only for Australian citizens in specialty occupations. Annual cap of 10,500 (rarely reached). Faster and simpler than H-1B.

I-9 Compliance for All US Hires

Every employer in the United States must complete Form I-9 for every employee hired after November 6, 1986. This includes US citizens and all non-citizens. The I-9 verifies the employee's identity and authorization to work. For foreign nationals, the I-9 will reference their visa, work permit, or other work authorization document.

Scenario 2: Hiring Someone Who Works from Their Home Country

When the employee will remain in their home country and work remotely, US immigration law is not relevant — they do not need US work authorization. However, their home country's employment, tax, and payroll law applies entirely.

The three primary structures for this scenario are:

1. Local entity. The US company establishes a subsidiary in the employee's country and employs them through it. See the Global Payroll Compliance article for full detail on this option.
2. Employer of Record (EOR). A third-party provider employs the worker in their country on the US company's behalf. The US company directs the work; the EOR handles all local compliance. This is the fastest and most scalable option for small headcount.
3. Independent contractor. Appropriate only for genuinely project-based, limited engagements where the worker clearly operates their own independent business. Carries misclassification risk in many jurisdictions.

Building International Hiring into Your ATS Workflow

International hiring creates additional candidate screening requirements that should be built into your ATS workflow:

• Work authorization status. Screen for current work authorization in the target country at application stage to avoid investing significant interview time before discovering an authorization issue.
• Location and tax residency. For remote international hires, confirm the candidate's country of residence before extending an offer — the country determines which compliance structure you need.
• Visa sponsorship flags. If you sponsor certain visa types, configure your ATS to flag visa type at application stage and route those candidates through your immigration counsel review process.
• Offer letter jurisdiction. International offers require different templates than US offers. Your ATS workflow should automatically route offers through the correct template based on the candidate's work country.

Green Card Sponsorship: The Long Game

If you are sponsoring foreign nationals on H-1B visas, you will eventually face pressure to sponsor green cards for long-tenured employees. Green card sponsorship (specifically the EB-2 and EB-3 employment-based categories that most professional hires use) involves a multi-year process:

1. PERM Labor Certification. A DOL process requiring the employer to demonstrate that no qualified US workers are available for the position. Typical timeline: 8 to 24 months depending on DOL backlog.
2. I-140 Immigrant Petition. Filed after PERM approval. Standard processing: 8 to 18 months. Premium processing available for $2,805.
3. Adjustment of Status or Consular Processing. The final step to obtain permanent residence. Wait times vary dramatically by the employee's country of birth due to annual per-country visa caps. Indian and Chinese nationals face multi-decade backlogs in some categories.

International Tax Considerations for US Employers

International hiring creates US tax exposure that many employers underestimate until their first IRS or state tax inquiry. The core issue is that employing workers who perform services for a US company — whether in the US on a visa or abroad — can create tax obligations in multiple jurisdictions simultaneously, and the rules vary significantly by country and by how the employment is structured.

For employees working in the US on employer-sponsored visas, the tax treatment is generally straightforward: they are subject to US federal and state income tax withholding, FICA (Social Security and Medicare), and FUTA in the same way as US citizens and permanent residents. The employer's payroll obligations are identical once the employee has work authorization.

For employees working abroad, the picture is more complex:

• US taxation of US persons abroad. US citizens and permanent residents are taxed on worldwide income regardless of where they live. If you have a US citizen working from Germany, they remain subject to US tax filing obligations. The Foreign Earned Income Exclusion (FEIE) provides partial relief up to $126,500 (2024 figure, indexed annually), but US payroll reporting obligations may still apply.
• Totalization agreements. The US has social security totalization agreements with 30 countries that determine which country's social security system applies to international employees — preventing double taxation of social security contributions. Verify whether a totalization agreement applies before setting up international payroll.
• State tax nexus. Some US states assert income tax jurisdiction over employees working abroad if they are technically employed by a US entity — a risk particularly in states with aggressive nexus rules like California and New York.

Building a Scalable Global Hiring Programme

Ad-hoc international hiring — reacting to individual candidate situations one at a time — is manageable for the first few international hires but becomes operationally unsustainable as headcount grows. Building a structured global hiring programme that standardises the key decisions upfront enables consistent, compliant, and efficient international talent acquisition at scale.

The foundation of a scalable global programme is a clear tiering framework: which countries will you hire in proactively (with established compliance infrastructure), which will you enter reactively when a specific candidate requires it (using EOR), and which will you decline for now due to complexity or risk? This decision framework removes the need to evaluate compliance requirements from scratch for each hire and enables HR to give clear answers to hiring managers quickly.

Your ATS should support this tiering framework through workflow configuration: automatically routing candidates based on their work country to the appropriate process, attaching country-specific compliance checklists, and generating offer letter templates that reflect local legal requirements. Without ATS support, global hiring programmes quickly degrade into patchwork manual processes that create compliance risk and inconsistent candidate experience.

Frequently Asked Questions

What is the difference between hiring a foreign national in the US and hiring someone abroad?

Hiring a foreign national in the US requires US work authorization (a visa or green card) and the employee is subject to US employment law. Hiring someone abroad means they work in their home country under that country's employment law, and you must comply with that country's payroll, tax, and labor regulations.

What work visas allow a US employer to sponsor a foreign national?

The most common employer-sponsored work visas include: H-1B (specialty occupation, annual cap with lottery), L-1 (intracompany transferee), O-1 (extraordinary ability), TN (Canadian and Mexican nationals under USMCA), and E-3 (Australian nationals in specialty occupations).

How long does H-1B sponsorship take?

Standard H-1B processing takes 3 to 6 months after the cap-subject lottery in April. Premium processing reduces USCIS processing to 15 business days. The earliest a cap-subject H-1B can begin work is October 1 of the filing year.

Does Form I-9 apply to all US hires including foreign nationals?

Yes. Form I-9 employment eligibility verification is required for all employees hired to work in the United States, regardless of citizenship status. For foreign nationals, the documents they present will reflect their work authorization.

Can a US company hire someone who lives abroad without sponsoring a work visa?

Yes. If the person will work from their home country, no US work visa is required. The employment structure would be a local entity in their country, an employer of record arrangement, or an independent contractor engagement.