A comprehensive guide for employers navigating H-1B visa compliance. Learn how to avoid costly missteps regarding Public Access Files, wage obligations, LCA postings, and unannounced FDNS site visits.
Getting an H-1B petition approved is only the first step in the corporate immigration process. Once an employer hires a foreign worker, the company immediately takes on a strict set of ongoing regulatory obligations. Both U.S. Citizenship and Immigration Services (USCIS) and the Department of Labor (DOL) closely monitor employers to ensure they are following the rules.
Recently, USCIS Fraud Detection and National Security (FDNS) officers have increased their unannounced site visits to verify corporate compliance. Making simple administrative errors or misunderstanding the regulations can easily trigger a full government audit. Since the launch of the DOL’s Project Firewall in late 2025 and the implementation of the H-1B Modernization Rule, compliance is no longer a passive HR duty, it’s a business-critical function
Here are the five most common compliance mistakes employers make and how you can prevent them.
- Failing to Maintain an Audit-Ready Public Access File (PAF)
The Public Access File (PAF) is the foundation of H-1B compliance. Federal law mandates that employers must create and maintain a PAF for every H-1B worker within one working day of filing the Labor Condition Application (LCA).
If an auditor walks through your door, the PAF is usually the very first thing they ask to see.
The Mistake:
Employers often treat the PAF as an afterthought, failing to compile it correctly, missing mandatory documents, or storing it haphazardly where it cannot be produced on demand.
How to Fix It:
Under the DOL’s Project Firewall, auditors don’t need a complaint to investigate, they can demand your files proactively. Ensure every PAF contains these mandatory items:
- A signed copy of the certified LCA.
- Documentation of the prevailing wage rate and its source.
- A clear explanation of how the actual wage was determined.
- Evidence that the LCA notice was properly posted.
- A summary of benefits offered to both U.S. and H-1B workers.
- Benching Employees or Mismanaging Wage Requirements
Your obligation to pay the H-1B worker the wage listed on their LCA is absolute. USCIS and the DOL strictly enforce the rule that H-1B workers must be paid their full, required wage continuously, even during non-productive periods.
The Mistake:
Benching occurs when an employer temporarily reduces an H-1B worker’s hours, places them on unpaid leave due to a lack of available work, or delays their start date while withholding pay. Additionally, failing to adjust an employee’s salary when the prevailing wage increases is a massive red flag.
How to Fix It:
If an H-1B employee is on your payroll, you must pay them the required wage, no exceptions. Wage discrepancies are one of the primary triggers for back-pay orders and heavy civil fines. Only a bona fide termination (which includes notifying USCIS, and in some cases, offering the employee return transportation to their home country) legally ends your wage obligation.
- Botching the LCA Posting Notice
The whole point of the LCA posting requirement is transparency. The government wants to make sure U.S. workers know the wages and working conditions of the incoming H-1B employee. Because this is incredibly easy for investigators to check, it’s low-hanging fruit in an audit.
The Mistake:
It sounds simple, but employers mess this up constantly. They forget to post the notice, they take it down after a few days, or they totally forget to document that they actually posted it. The biggest trap? Forgetting to post the notice at secondary client sites or remote home offices.
How to Fix It:
The rule is simple: Post the LCA notice in two obvious locations at the primary worksite for at least 10 consecutive business days. If they work remotely or at a client’s office, you have to post it there too. Take a picture of it on the wall or keep time-stamped digital proof in your PAF. If an auditor asks, you need to be able to say, Yes, we posted it, here is exactly where it was, and here is the proof.
- The Amendment Trap (Ignoring Material Changes)
An H-1B visa isn’t a blanket work permit. It’s tied strictly to the specific job duties, salary, and geographic location you put in the original petition. If any of those things change, you generally need to file an amended petition with USCIS.
The Mistake:
Companies want to reward good work, so they promote an H-1B worker. Or, they shift their core duties to a different department, or move them to a new office in a different city. Doing this without filing an amendment can become a massive red flag.
How to Fix It:
When FDNS officers show up for site visits, they are checking to see if the employee is sitting at the desk you said they’d be at, doing the exact job you said they’d be doing. Before you change a job title, give a major promotion, or relocate a sponsored worker, pick up the phone and call your immigration lawyer. Let them tell you if you need to file an amended petition.
- Mishandling an FDNS Site Visit
When FDNS officers arrive for an unannounced site visit, how your team responds can be the difference between a routine sign-off and a full-scale federal investigation. Remember, under current regulations, refusal to comply with a site visit can result in the immediate denial or revocation of the H-1B petition.
The Mistake:
Leaving frontline staff completely untrained on how to handle government officials. Receptionists might turn auditors away, or panicked managers might volunteer inaccurate, speculative information that contradicts the official H-1B petition.
How to Fix It:
Preparation is your best defense:
- Designate a Point of Contact: Have a trained HR manager or legal representative ready to liaise with the auditor.
- Verify Credentials: Always ask to see the officer’s government badge and note their contact information.
- Stick to the Facts: Answer questions truthfully, but concisely. Never guess or speculate. If you don’t have a document readily available, politely ask for time to retrieve it.
- Prep the Employee: Brief your H-1B workers so they know what to expect. They should be able to confidently confirm their job title, salary, and daily duties as they align with the petition.
Helpful Resources
Maintaining compliance does not have to be an overwhelming burden. By keeping accurate records and understanding the rules surrounding wages and job changes, you can protect your company from costly audits. For more detailed guidance, you can reference these official government resources:
USCIS H-1B Specialty Occupations Overview: Official guidelines from USCIS on H-1B eligibility criteria, employer responsibilities, and petition requirements.
USCIS Immigration & Citizenship Data Hub: Access official USCIS reports, petition data, and employer data hubs.
U.S. Department of Labor H-1B Program Overview: Detailed information on the DOL Wage and Hour Division (WHD) enforcement policies, Labor Condition Applications (LCAs), and compliance programs.
