I-140 Portability: Change Employers through AC21

Changing employers during an employment-based green card process was historically a risky decision that could cost years of waiting and jeopardize the entire immigration process. The approval of the American Competitiveness in the Twenty-first Century Act (AC21) in October 2000 changed this scenario by creating I-140 portability, allowing professionals to switch employers without losing their place in the permanent residency queue. Understanding the requirements, timelines, and procedures of this portability is essential for any foreign worker planning to advance professionally in the United States without compromising their immigration journey.

What is Form I-140

The Form I-140 (Immigrant Petition for Alien Workers) is the petition filed with USCIS that proves a foreign worker meets the requirements of an employment-based immigration category. In most cases, the petition is filed by the sponsoring employer, but in categories such as EB-2 NIW (National Interest Waiver), the professional can self-petition.

Approval of the I-140 fulfills three fundamental procedural functions:

• Establishes the applicant’s priority date in the green card queue
• Confirms professional eligibility in the chosen employment category
• Allows advancement to Adjustment of Status (Form I-485) when the priority date is current in the Visa Bulletin

The I-140 petition fee is US$ 715, with an option for premium processing at US$ 2,965 (amount updated as of March 2026), which guarantees a decision or Request for Evidence (RFE) within 15 calendar days.

Historical employer linkage

Before AC21, the I-140 was strictly tied to the sponsoring employer. If the professional changed jobs, voluntarily or not, during the process, they would lose the approved I-140 and, with it, the accumulated priority date. This created a dependency relationship that limited professional mobility and, in many cases, subjected qualified workers to unfavorable conditions out of fear of losing years of investment in the immigration process.

This distortion was particularly severe for professionals from countries with long Visa Bulletin queues, such as India and China, where the wait can exceed a decade in the EB-2 and EB-3 categories.

How AC21 portability works

Section 106(c) of AC21 introduced the concept of job portability, allowing the beneficiary of an approved I-140 to change employers without losing progress in the green card process. For portability to be valid, three requirements must be met simultaneously:

1. Approved I-140: the petition must be approved by USCIS. In specific situations, a pending I-140 may be accepted, provided it is approved before the final decision on the I-485
2. I-485 pending for 180 days or more: the Adjustment of Status must have been filed and pending with USCIS for at least 180 days from the receipt date indicated on the receipt notice
3. Same or similar occupation: the new job must be classified as the same or similar to the position described in the original I-140 petition

Same or similar occupation

The concept of same or similar occupational classification is one of the most nuanced aspects of AC21 portability. USCIS does not limit itself to comparing job titles or SOC (Standard Occupational Classification) codes. The evaluation considers the totality of circumstances, including:

• Main duties and responsibilities of the position
• Level of seniority and complexity
• Required academic and professional qualifications
• Necessary technical skills
• Comparable salary range
• SOC classification as a reference, but not as the sole criterion

For example, a software engineer who moves from one company to another while maintaining similar functions will likely qualify. However, a software engineer who accepts a sales manager position at another company faces a high risk of denial due to occupational incompatibility.

Supplement J: mandatory form

Since January 17, 2017, I-140 portability requires the completion of Form I-485 Supplement J (Confirmation of Bona Fide Job Offer or Request for Job Portability Under INA Section 204(j)). This form must be submitted to USCIS in the following scenarios:

• When the applicant wishes to port their I-485 to a new employer
• When USCIS issues an RFE or NOID requesting confirmation of the job offer
• When there is a material change in the position with the original employer

The Supplement J must contain a detailed description of the new position, including title, duties, educational requirements, and offered salary. The new job offer must be full-time and permanent.

Protection against revocation

A legitimate concern for professionals considering changing employers is the possibility of the previous employer revoking the I-140. The final AC21 regulation, published in 2017, brought important protections in this regard. If the I-140 has been approved for at least 180 days, the previous employer cannot invalidate it through revocation, except in cases of fraud or material error in the original petition.

This means that even if the previous employer tries to revoke the I-140 out of dissatisfaction with the employee’s departure, the priority date and approval remain valid for portability purposes, provided the 180-day approval period has been met.

Risks and common pitfalls

Despite the protections offered by AC21, I-140 portability involves significant risks when executed without proper planning:

• Premature change: switching employers before the 180 days of pending I-485 are completed invalidates portability
• Occupational incompatibility: accepting a materially different position may result in denial of Adjustment of Status
• Insufficient documentation: failing to keep detailed records of job descriptions, contracts, and correspondence with USCIS weakens the case
• Employment gap: prolonged periods without employment after the change may raise questions about the bona fide nature of the job offer
• Failure to file Supplement J: omitting this form may result in an RFE or denial of the I-485

Categories eligible for portability

I-140 portability under AC21 applies exclusively to first, second, and third preference employment-based immigration categories:

• EB-1: individuals with extraordinary ability, outstanding researchers, and multinational executives
• EB-2: professionals with advanced degrees or exceptional ability, including EB-2 NIW
• EB-3: skilled workers, professionals, and other workers

Categories such as EB-4 (special immigrants) and EB-5 (investors) follow different rules and do not directly benefit from AC21 portability in the same way.

I-140 portability represents one of the most important protections for foreign workers in the U.S. immigration system. It allows qualified professionals to pursue career mobility without sacrificing years of procedural investment, provided the AC21 requirements are strictly observed. Keeping organized documentation, understanding legal deadlines, and ensuring occupational compatibility are the pillars for a successful transition.

Victoria Harper

Editor-in-Chief

Meet the author

Leading journalism and editorial content at Visto n’ Visa, Victoria helps make immigration topics clear, trustworthy, and easy to understand. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.