| E-1 | Qualifying treaty-country trade enterprise | Treaty nationality, substantial qualifying trade and the applicant's enterprise role | Principal trade and treaty ownership |
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| E-2 | Qualifying treaty-country investment in a real business | Treaty nationality, investment at risk, lawful funding, enterprise operations and qualifying role | Ownership, source of funds and business viability |
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| E-3 | Australian specialty occupation professional | Australian citizenship, specialty occupation credentials, job offer and labor condition application | Nationality and specialty occupation fit |
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| H-1B | Qualifying specialty occupation for a US employer | Specific job duties, specialized degree or equivalent credentials, labor condition application and petition | Whether the role qualifies and whether the cap applies |
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| H-1B1 | Specialty occupation employment for qualifying Chilean and Singaporean nationals | Nationality, specialized duties, credentials, certified LCA and qualifying employer | Consular or USCIS filing route and temporary intent requirements |
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| H-2A / H-2B | Qualifying temporary agricultural or nonagricultural labor | Specific temporary need, worker recruitment, applicable certification and compliance records | Temporary need and employer obligations |
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| L-1 | Transfer within a qualifying multinational organization | Related companies, qualifying employment abroad and US managerial, executive or specialized knowledge duties | Corporate relationship and work history |
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| L-1A | Transfer of a qualifying multinational executive or manager | Corporate relationship, foreign employment, executive or managerial duties | Role qualification and additional new-office rules where applicable |
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| L-1B | Transfer of an employee with specialized organizational knowledge | Corporate relationship, foreign employment, special or advanced knowledge | US duties, blanket eligibility and third-party worksite restrictions |
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| O-1 | Work requiring extraordinary ability or achievement | Field-specific achievements, qualifying engagements, a petitioner or eligible agent and other required evidence | Strength of qualifying achievements and petition structure |
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| O-1A | Extraordinary ability in sciences, education, business or athletics | Sustained national or international acclaim, qualifying O-1A evidence, proposed work and an eligible petitioner | Which O-1A criteria the record supports and whether the proposed work aligns with the field of extraordinary ability |
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| O-1B | Extraordinary ability in the arts or extraordinary achievement in motion picture and television | Artistic distinction or screen-industry achievements, applicable evidence and consultation requirements | Whether the arts standard or the motion picture and television standard governs the proposed work |
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| TN | Eligible Canadian or Mexican professional in an enumerated occupation | Citizenship, qualifying profession, position and required credentials | Whether the occupation appears on the USMCA list |
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