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What is an advisory opinion in the O-1B?

In the O-1B, an advisory opinion is an assessment from an organization, union, or expert in the field that attests to the applicant's excellence and strengthens the petition. Learn about the role this document plays in your case.

Written by

Victoria Harper

Editor-in-Chief

Updated on July 17, 2026
1 min read
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In the O-1B (the category for individuals with extraordinary ability in the arts), an advisory opinion is a specialized assessment that helps demonstrate that the candidate truly has the level of distinction required. It is one of the elements that typically accompanies the petition.

In practice, it takes the form of a letter or report issued by a recognized source in the applicant’s field, analyzing their qualifications. It may come from:

  • A relevant organization or association in the field.
  • A union or professional guild in the sector.
  • An expert with recognized standing in the industry.

The opinion attests to the candidate’s skill and professional recognition, and it supports the immigration authority’s evaluation of whether the applicant’s profile meets the O-1B classification. Because requirements and submission guidelines can vary, it is advisable to verify updated requirements with USCIS or with a specialist before filing.

Learn more about O-1

Requirement
Extraordinary ability
Initial validity
3 years
Extension
1 year at a time (unlimited)
Processing
2-4 months
All about O-1

About the author

Victoria Harper

Editor-in-Chief

Meet the author

As a journalist and lead editor at Visto n’ Visa, Victoria helps ensure that immigration topics are covered in a clear, trustworthy, and easy-to-understand way. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.

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What is an advisory opinion in the O-1B?

In the O-1B, an advisory opinion is an assessment from an organization, union, or expert in the field that attests to the applicant's excellence and strengthens the petition. Learn about the role this document plays in your case.

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