If your growing company has identified a brilliant engineer in Toronto, a marketing director in London, or a research scientist in Bangalore, you've probably discovered that hiring them isn't as simple as sending an offer letter. US immigration law restricts who can work in the United States, and navigating the sponsorship process is one of the most complex undertakings an HR or operations team will face. Filing fees, attorney costs, and multi-year timelines all have to be planned for, and a single misstep can cost your candidate their shot at the role.
This guide is a practical overview of the employer sponsorship landscape—what the main visa categories are, when each one applies, what the process looks like, and roughly what it costs. It is informational only; US immigration rules change frequently and individual cases vary widely, so always confirm current requirements on USCIS.gov and consult a licensed immigration attorney before filing.
The two big categories: non-immigrant vs. immigrant visas
Before picking a visa, you need to know whether you're bringing the candidate on temporarily or pursuing permanent residency (a green card) for them.
Non-immigrant visas are temporary work authorizations—H-1B, L-1, O-1, TN, E-3, and others. They let the employee work for you for a defined period (typically 1–7 years), often with extensions, but they don't lead directly to permanent residency. Most international hires start on a non-immigrant visa, and many employers later sponsor them for a green card.
Immigrant visas lead to permanent residency through the employment-based (EB) preference categories—EB-1, EB-2, EB-3, EB-4, and EB-5. These are the long-term path for foreign workers you want to keep indefinitely. The process involves multiple steps and can take 1–7+ years depending on the worker's country of birth and preference category.
The main non-immigrant work visas
H-1B: specialty occupation
The H-1B is the most common US work visa and applies to "specialty occupations"—roles requiring at least a bachelor's degree in a specific field. Software engineers, accountants, architects, financial analysts, and teachers are classic H-1B candidates. The H-1B is capped at 65,000 new visas per fiscal year, plus 20,000 additional for applicants with US master's degrees. Because demand far exceeds supply, USCIS runs a lottery each March to select which petitions can be filed.
H-1B sponsorship requires the employer to file a Labor Condition Application (LCA) with the Department of Labor attesting that the worker will be paid at least the prevailing wage for the role and location, and then file Form I-129 with USCIS. Initial H-1B status is granted for 3 years and can be extended to 6 years. Extensions beyond 6 years are possible if a green card process is underway.
L-1: intracompany transferee
The L-1 lets multinational companies transfer employees from a foreign office to a US office. The candidate must have worked for the foreign entity for at least one continuous year within the three years preceding the petition. L-1A is for managers and executives (valid up to 7 years); L-1B is for workers with specialized knowledge of the company's products, processes, or procedures (valid up to 5 years). L-1 has no annual cap, which makes it valuable—but it requires an established qualifying relationship between the US and foreign entities.
O-1: extraordinary ability
The O-1 is for individuals with extraordinary ability in the sciences, arts, education, business, or athletics—or extraordinary achievement in film or television. The bar is high: candidates must demonstrate national or international recognition through awards, publications, press coverage, judging experience, and similar evidence. O-1 has no annual cap and can be renewed indefinitely in 3-year increments. It is often used by researchers, founders, artists, and senior professionals with strong portfolios.
TN, E-3, and H-1B1: country-specific alternatives
Citizens of Canada and Mexico can use the TN visa under NAFTA/USMCA for certain professional occupations—fast, cheap, and renewable indefinitely. Australian citizens can use the E-3 visa, which is similar to the H-1B but with a separate 10,500 visa annual quota. Citizens of Singapore and Chile can use the H-1B1, which has 6,800 visas set aside annually. These alternatives are worth checking before committing to the H-1B lottery.
The employment-based green card process
For most employment-based green cards (EB-2 and EB-3), the sponsorship process has three major steps:
Step 1: PERM labor certification
Before sponsoring a foreign worker for an EB-2 or EB-3 green card, the employer must obtain a labor certification from the Department of Labor. This process, known as PERM, requires the employer to:
- Obtain a prevailing wage determination (PWD) from the National Prevailing Wage Center—currently taking 6+ months.
- Recruit for the position through required channels (two Sunday newspaper ads, a state workforce agency posting, and at least three additional recruitment steps for professional roles).
- File ETA Form 9089 with the DOL, attesting that no qualified US workers applied and that hiring the foreign worker will not adversely affect US workers' wages.
PERM processing currently takes 12–18 months end-to-end. There is no requirement to pay the worker's costs—PERM expenses are borne entirely by the employer.
Step 2: Form I-140 immigrant petition
Once PERM is certified, the employer files Form I-140 with USCIS, asking to classify the worker in the appropriate EB preference category. The I-140 establishes that the employer has the ability to pay the offered wage and that the worker meets the qualifications for the category. Premium processing is available for $2,805, reducing the wait from 6+ months to 15 calendar days.
Step 3: Adjustment of status (I-485) or consular processing
If the worker is in the US and a visa number is available, they file Form I-485 to adjust status to permanent resident. If outside the US, they go through consular processing at a US embassy. The wait for a visa number depends on the worker's preference category and country of birth—see the monthly Visa Bulletin at travel.state.gov.
Visa bulletin, priority dates, and country backlogs
Each approved I-140 is assigned a priority date—usually the date the PERM application was filed. The worker can move to step 3 only when their priority date becomes "current" in the monthly Visa Bulletin. The wait depends on category and country of birth.
For EB-2 and EB-3 workers born in India or China, the wait can be many years—currently 5–12+ years for India EB-2/EB-3, and 2–5 years for China. Workers born in most other countries face little or no wait. This country-of-birth bottleneck is one of the most frustrating features of US employment-based immigration and the reason many high-skilled workers ultimately leave for countries with more predictable pathways.
EB-1: the fast lane
EB-1 is the first employment-based preference category and covers three subgroups: EB-1A (extraordinary ability—self-petition allowed), EB-1B (outstanding professors and researchers), and EB-1C (multinational managers and executives). EB-1 has no PERM requirement, which saves 12–18 months. For most countries EB-1 is current; for India and China there are backlogs but they are shorter than EB-2/EB-3.
EB-2 NIW: national interest waiver
The EB-2 National Interest Waiver lets certain workers skip the PERM process if their work is in the national interest of the United States. Common in fields like AI research, biotech, climate science, and entrepreneurship in underserved regions. The standard is demanding—recent USCIS guidance has opened this pathway to more founders and STEM professionals.
AC21 portability: changing jobs during the green card process
The American Competitiveness in the Twenty-First Century Act (AC21) provides critical portability for workers stuck in long green card backlogs. Under AC21 §106(c), once an I-485 has been pending for at least 180 days, the worker can change jobs to a new employer in the "same or similar" occupational classification without resetting the green card process. This is a powerful protection—without it, workers would be locked to their sponsoring employer for a decade.
"Same or similar" is interpreted based on job duties, DOT/SOC codes, and wage differences. Workers considering an AC21 job change should consult an attorney before accepting the new role, since USCIS has discretion to determine whether the new role qualifies.
Costs to the employer
Sponsoring a foreign worker is not cheap. Here's a rough breakdown for a typical H-1B plus eventual green card:
- H-1B filing (initial): $1,500–$2,500 in USCIS fees (ACWIA fee, fraud fee, DHS fee, optional $2,805 premium processing) plus $1,500–$7,500 in attorney fees.
- H-1B extension/amendment: $1,000–$1,500 in USCIS fees plus $1,000–$3,500 in attorney fees.
- PERM labor certification: No government filing fee, but $2,500–$6,000 in attorney fees plus $1,000–$2,500 in recruitment advertising costs.
- I-140 petition: $700 base fee + $2,805 optional premium processing + $1,500–$3,500 in attorney fees.
- I-485 adjustment (per worker): $1,440 filing fee + $1,000–$3,000 in attorney fees. Medical exam costs (~$500) are the worker's responsibility.
End-to-end, a clean H-1B to green card case for one worker costs the employer roughly $15,000–$35,000 in fees and legal costs over 3–7 years. Complex cases or workers from backlogged countries can drive the total higher due to repeated extensions and amendments.
Who pays for what
Department of Labor regulations require the employer to pay all PERM-related costs. USCIS fees for H-1B and I-140 petitions must also be paid by the employer. Workers may voluntarily pay their own I-485 filing fees and attorney fees for adjustment of status, but the employer cannot require this. H-1B workers cannot be required to pay a penalty if they leave the employer before a certain date—a "clawback" of H-1B fees is generally prohibited.
Timelines: plan years ahead
End-to-end timelines vary dramatically based on visa category, country of birth, and whether premium processing is used:
- H-1B cap case: Lottery in March, filing in April–June, approval in 3–6 months (or 15 days with premium processing), work authorization starts October 1. Plan ~12 months from job offer to start date for a fresh cap-subject H-1B.
- L-1, O-1, TN, E-3: 2–6 months from initiation to work authorization, often faster.
- EB-1 green card: 12–24 months for most countries; 2–5 years for India/China.
- EB-2/EB-3 green card (non-backlogged country): 2–3 years end-to-end.
- EB-2/EB-3 green card (India): 7–15+ years due to backlog.
Practical guidance for employers
- Start early. If you're hiring for a role that requires specialized skills and may need international candidates, begin immigration planning 9–12 months before the target start date.
- Engage experienced immigration counsel. Immigration law is specialized and changes frequently. Use a firm with employer-side experience, not a generalist.
- Budget realistically. For a foreign worker you intend to keep long-term, expect $20,000–$40,000 in cumulative immigration costs over 5 years.
- Have backup candidates. H-1B lottery selection rates have been 25–35% in recent years. Don't bet your hiring plan on a single H-1B candidate.
- Consider remote-first alternatives. If US immigration isn't feasible, explore employing the worker through a foreign subsidiary, an Employer of Record (EOR) service, or as a contractor in their home country—subject to local laws and US tax rules.
- Document everything. H-1B and PERM audits happen. Maintain meticulous records of prevailing wage determinations, recruitment steps, public access files, and I-9 compliance.
- Plan the green card conversation early. Many high-performing H-1B workers expect green card sponsorship within 1–2 years. Decide as a company what your policy is and communicate it during hiring.
This article is informational only and does not constitute legal advice. US immigration rules change frequently—sometimes multiple times per year through policy memos, executive actions, and court rulings. Always verify current requirements on USCIS.gov and consult a licensed immigration attorney before initiating any sponsorship. To quickly see which visa categories might fit a candidate's profile, try our Visa Eligibility Pre-Screener as a starting point for further research.