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By Yadira Zepeda
Managing Attorney

If your employment-based green card process is already underway, changing jobs may be possible without starting over. Under certain circumstances, the American Competitiveness in the Twenty-First Century Act (AC21) allows foreign workers with pending adjustment of status applications to change employers while preserving their place in the green card process.

For many H-1B workers, understanding how H-1B portability and AC21 work together can help when evaluating new career opportunities.

What Is H-1B Portability?

H-1B portability allows eligible workers to begin working for a new employer after the new employer files a nonfrivolous H-1B petition on their behalf. In many cases, you do not need to wait for approval before starting the new job.

To qualify for H-1B portability, you generally must:

  • Have been lawfully admitted to the United States
  • Currently hold valid H-1B status
  • Have a new employer file an H-1B petition before your current status expires
  • Have the new employer submit an approved, unexpired Labor Condition Application covering the offered H-1B work
  • Not have worked without authorization

This provision provides flexibility for H-1B workers who receive new employment opportunities while maintaining lawful status.

What Is AC21 Portability?

AC21 portability addresses a different issue. It generally applies to certain workers in the EB-1, EB-2, and EB-3 employment-based green card categories whose cases have progressed to the adjustment of status stage.

Under AC21, you may be able to change employers without requiring a completely new green card process if:

  • Your Form I-485 is based on an approved or pending Form I-140 that names you as the principal beneficiary
  • Your Form I-485 Adjustment of Status application has been pending for at least 180 days
  • The new position is in the same or a similar occupational classification as the position described in the original green card petition
  • You have a bona fide offer of permanent employment from the new employer

This provision was designed to prevent workers from being locked into a single employer for years while waiting for green card processing and visa availability.

Which Green Card Categories Qualify for AC21 Portability?

AC21 portability generally applies to certain workers pursuing employment-based green cards in the EB-1, EB-2, and EB-3 preference categories whose Form I-485 applications have been pending for at least 180 days. Some categories, such as EB-1A extraordinary ability petitions and certain physician National Interest Waiver cases, may follow different rules because they are not tied to a sponsoring employer in the same way as many employer-sponsored petitions.

Can You Change Jobs While Your Green Card Is Pending?

Once your I-485 application has been pending for at least 180 days, AC21 may allow you to accept a position with a different employer if the new role is sufficiently similar to the original position.

USCIS may consider factors such as:

  • Job duties and responsibilities
  • Required skills and experience
  • Educational requirements
  • Occupational classifications
  • Salary differences and the reasons for them

A promotion does not automatically prevent AC21 portability if the new position remains substantially related to the original role.

What Happens to Your Approved I-140?

The 180-day AC21 portability rule differs from the protections that may apply to an approved Form I-140. In many cases, if an I-140 has been approved for at least 180 days, certain benefits associated with the petition may remain available even if the sponsoring employer later withdraws it. Workers may also retain the petition’s priority date for a future employment-based case. Because timing can affect eligibility, it is important to evaluate any job change carefully.

Risks to Consider Before Changing Employers

Although AC21 provides flexibility, changing jobs during the green card process should be approached carefully. In particular, changing employers before your Form I-485 has been pending for at least 180 days may prevent you from qualifying for AC21 portability and could result in the denial of your adjustment of status application.

Other potential issues may include:

  • The new position may not be considered sufficiently similar to the original role
  • Job descriptions may create inconsistencies in the immigration record
  • Documentation issues may complicate USCIS review

Before making a move, it is wise to evaluate how the new position may affect both your H-1B status and your pending green card application.

How Can You Document an AC21 Job Change?

When changing employers under AC21, strong documentation can help demonstrate eligibility.

Common supporting evidence may include:

  • Job descriptions
  • Offer letters
  • Organizational information
  • Evidence regarding required education, skills, and experience

Providing clear documentation can help establish that the new position falls within the same or similar occupational classification.

What Is Form I-485 Supplement J?

Form I-485 Supplement J is used to confirm a qualifying permanent job offer and, when applicable, request AC21 portability. USCIS may request the form during adjudication, and some applicants submit it when changing employers after becoming eligible for portability.

Planning Your Next Career Move

A pending green card application does not always prevent you from pursuing new opportunities. H-1B portability and AC21 protections may allow you to change employers while preserving years of progress in the employment-based immigration process. Because these cases often involve timing requirements and detailed eligibility considerations, obtaining guidance before making a transition can help avoid unnecessary complications.

At Zepeda Law Firm, we help professionals, workers, and employers evaluate immigration options and address questions involving H-1B status, employment-based green cards, and AC21 portability. Contact us to discuss your situation and learn how we can help you move forward with confidence.

About the Author
Yadira Zepeda, is the principal attorney and founder of Zepeda Law Firm, PLLC. With over 18 years of immigration law experience, representing people from around the world, she is recognized in her field and community as an expert in the U.S. Immigration laws. She has built her practice on mostly referrals as her aim has always been to be more intimate and personal with clientele. While other firms have paralegals conduct consultations, she handles all initial consults with clients and oversees each case. Her goal is to provide kindness and sincerity to each case in a very intimidating process.