How Employers Sponsor Foreign Workers: A Step-by-Step Guide
Sponsoring a foreign worker generally means choosing the right visa category first, then filing the required labor or wage documentation, then submitting the actual petition to USCIS, in that order. The exact steps differ depending on whether you are sponsoring a temporary worker like an H-1B employee or pursuing a green card through PERM labor certification, but nearly every employer sponsorship follows this same three-stage structure: category selection, labor market documentation, and petition filing.
This guide walks employers through the process end to end. If your goal is a green card rather than a temporary visa, see our guide on what to expect during PERM labor certification.
Planning to sponsor a foreign employee? Atlas Legal helps employers choose the right category and manage the filing from start to finish. Schedule a consultation with our team.
Key Takeaways
- Sponsorship follows three stages: choosing the right visa category, completing any required labor or wage documentation, and filing the petition with USCIS.
- H-1B sponsorship requires a certified Labor Condition Application and, for most employers, winning the annual cap lottery.
- Green card sponsorship through EB-2 or EB-3 usually starts with PERM labor certification, a Department of Labor process that can take 16 to 21 months.
- L-1 transfers and O-1 extraordinary ability petitions do not require PERM and have no annual cap, which can make them faster where the employee qualifies.
- Employers must maintain a public access file and comply with wage and notice requirements throughout the sponsorship.
- Budget for government filing fees, attorney fees, and, where applicable, the current H-1B $100,000 fee for new petitions covering beneficiaries outside the U.S.
What This Guide Covers
- Step 1: Choose the right visa category
- Step 2: Complete labor or wage documentation
- Step 3: File the petition
- Typical timeline by category
- Ongoing compliance obligations
- What sponsorship costs employers
- Common mistakes employers make
- Frequently asked questions
Step 1: Choose the Right Visa Category
Start by matching the role and the employee’s background to a category: H-1B for specialty occupations requiring a specific degree, L-1 for transferring an employee from a related foreign office, O-1 for individuals with extraordinary ability or achievement, or a green card category like EB-2 or EB-3 if the goal is permanent sponsorship. Choosing the wrong category early is one of the most common causes of delay, since some categories, like H-1B, are tied to an annual cap and filing window that cannot be worked around once missed.
Step 2: Complete Labor or Wage Documentation
H-1B sponsorship requires a certified Labor Condition Application from the Department of Labor confirming the offered wage meets prevailing wage requirements and that hiring will not adversely affect similarly employed U.S. workers. Green card sponsorship through EB-2 or EB-3 usually requires PERM labor certification, a more involved process where the employer tests the labor market through recruitment before DOL certifies that no qualified, willing U.S. worker is available. L-1 and O-1 filings do not require this labor market documentation.
Step 3: File the Petition
Once the labor documentation is complete (where required), the employer files the actual petition, Form I-129 for H-1B, L-1, or O-1, or Form I-140 following an approved PERM for most green card categories. USCIS reviews the petition and supporting evidence, and may issue a Request for Evidence if documentation is incomplete. Premium processing is available for many categories for an additional fee if faster adjudication is needed.
Typical Timeline by Category
| Category | Labor Documentation | Typical Overall Timeline |
|---|---|---|
| H-1B (cap-subject) | LCA (weeks) | Tied to March registration cycle; petition adjudication weeks to months after selection |
| L-1 | None required | No cap; petition timing depends on USCIS processing, weeks to months |
| O-1 | None required | No cap; petition timing depends on USCIS processing, weeks to months |
| EB-2/EB-3 (PERM route) | PERM labor certification, 16-21 months | Several years including I-140 and I-485/visa availability |
Ongoing Compliance Obligations
Sponsoring employers take on continuing obligations, not just a one-time filing. H-1B employers must maintain a public access file documenting wage and notice compliance, notify affected workers of the LCA filing, and pay the required wage throughout employment. All employers must properly complete Form I-9 for every employee and, where applicable, comply with E-Verify requirements. Compliance failures can trigger audits, fines, or complications for future sponsorship.
What Sponsorship Costs Employers
Costs vary significantly by category. H-1B filings include the $215 registration fee, a base filing fee, an ACWIA training fee of $750 or $1,500 depending on employer size, a $500 fraud prevention fee, and, for new petitions covering beneficiaries currently outside the U.S., the additional $100,000 fee currently in effect under the 2025-2026 proclamation, pending appeal. PERM-based green card sponsorship adds recruitment advertising costs and typically a higher total attorney fee given the longer, more document-intensive process.
Common Mistakes Employers Make
The most frequent issues include missing the H-1B March registration window, underestimating PERM’s 16 to 21 month timeline when planning a hire date, failing to maintain the required public access file, and choosing a visa category that does not match the actual role’s requirements, which can trigger a Request for Evidence or denial. Planning the category and timeline early, ideally months before the position needs to be filled, avoids most of these issues.
Frequently Asked Questions
Can a small business sponsor a foreign worker?
Yes. Company size does not disqualify an employer from sponsorship, though smaller employers pay a lower ACWIA training fee for H-1B petitions and should budget for attorney and government fees relative to their hiring needs.
How long does it take to sponsor someone for a green card through work?
For EB-2 and EB-3 categories requiring PERM, expect several years total once PERM (16 to 21 months), I-140 processing, and I-485 or visa availability wait times are combined, though this varies by the employee’s country of birth due to per-country caps.
Do all employer-sponsored visas require a Labor Condition Application?
No. The LCA is specific to H-1B and a few related categories. L-1 and O-1 petitions do not require an LCA, and PERM-based green card sponsorship uses a separate Department of Labor recruitment process instead.
What happens if USCIS selects my H-1B registration but the position changes before filing?
Material changes to the job before filing can affect the petition’s viability. Consult an immigration attorney promptly if the role, wage, or work location changes after registration but before the full petition is filed.
Bottom Line
Employer sponsorship follows a predictable structure, category selection, labor documentation, then petition filing, but the details and timeline vary significantly by category. Planning early, especially around the H-1B cap window and PERM’s long timeline, prevents most avoidable delays.
Atlas Legal Immigration Law helps employers choose the right category and manage sponsorship from start to finish. Reach our team at 1750 E Golf Rd Ste 214, Schaumburg, IL 60173, by phone at (+1) 872 382 2762, or by email at info@theatlaslegal.com. Explore our employment visa services or schedule a consultation.
Reviewed by the Atlas Legal Immigration Law editorial team. Last reviewed on August 31, 2026.
Sources
- U.S. Department of Labor, PERM Labor Certification Program
- U.S. Citizenship and Immigration Services, H-1B Specialty Occupations
- American Immigration Council, USCIS Implements the H-1B Proclamation $100,000 Fee
This article is provided for general informational purposes only and does not constitute legal advice. Immigration laws, government fees, policies, and processing times may change. Reading this article or contacting Atlas Legal does not by itself create an attorney-client relationship. The outcome of any immigration matter depends on its individual facts and circumstances.
