Employment-Based Immigration Resources

Primary sources and reference material for EB-1A, O-1A, EB-1B, and EB-2 NIW petitions: the governing USCIS regulations, AAO precedent decisions, official filing forms, and a glossary of the terms you'll see throughout the process.

Visa Category Guides

Overview pages on each supported employment-based category, with the governing regulation and adjudication framework.

USCIS Regulations

The controlling Code of Federal Regulations sections that define each category's evidence framework and adjudication standard.

AAO & Federal Precedent

Binding precedent decisions that shape how USCIS adjudicates extraordinary-ability and national-interest-waiver petitions.

Official USCIS Resources

Primary sources on the USCIS and U.S. Department of State websites. These links open in a new tab.

Glossary

Terms you'll encounter in employment-based petitions and the AutoPetition workspace.

Priority Date
The date USCIS receives a properly filed I-140 (or, for PERM-required categories, the labor certification). Determines a beneficiary's place in the visa queue per the Visa Bulletin.
I-140
Immigrant Petition for Alien Workers. The primary petition form for employment-based green-card categories including EB-1A, EB-1B, EB-2 NIW, and EB-3.
I-129
Petition for a Nonimmigrant Worker. Used by employers and agents to petition for O-1A and other non-immigrant work classifications.
I-485
Application to Register Permanent Residence or Adjust Status. Filed inside the U.S. to move from a non-immigrant status to lawful permanent residence when a visa number is current.
Final Merits Determination
The second step of the Kazarian adjudication framework: after confirming an applicant has met the minimum regulatory criteria, the adjudicator assesses whether the evidence as a whole demonstrates the required level of acclaim or national importance.
RFE
Request for Evidence. A USCIS notice asking the petitioner to supply additional documentation. Typical response window is 87 days.
NOID
Notice of Intent to Deny. A stronger USCIS notice signaling the adjudicator is leaning toward denial and inviting rebuttal evidence before final action.
Premium Processing
A USCIS option (fee-based) that guarantees an adjudication action — approval, RFE, NOID, or denial — within a defined window (typically 15 business days for I-140 EB-1A and EB-2 NIW).
Concurrent Filing
Filing Form I-485 together with Form I-140 when the beneficiary is inside the U.S. and a visa number is immediately available per the Visa Bulletin.
Advisory Opinion
A written consultation required for most O-1A petitions from a peer group, labor organization, or recognized expert in the beneficiary's field.
PERM
The U.S. Department of Labor's Program Electronic Review Management process for obtaining a labor certification. EB-1A, EB-1B, and EB-2 NIW are exempt from PERM; most other EB-2 and EB-3 petitions require it.
AAO
USCIS Administrative Appeals Office. Hears appeals of certain USCIS decisions and issues precedent decisions such as Matter of Dhanasar.
Endeavor
In the EB-2 NIW context, the proposed work or field of activity the beneficiary intends to pursue. Dhanasar prong 1 requires the endeavor to have both substantial merit and national importance.