How to Prove Professional Experience for U.S. Visas

Proving professional experience is one of the most common stumbling blocks in U.S. immigration petitions — not because applicants lack the track record, but because the documentation submitted fails to meet USCIS’s evidentiary standard. Letters written in a loose format, without precise dates, specific duties, or a verifiable signature generate Requests for Evidence and, in persistent cases, outright denials. This guide walks you through building an experience dossier that will withstand scrutiny from an adjudicating officer.

Why experience matters in each category

The weight of professional experience varies by visa category. In the EB-2 NIW and the EB-1A, experience supports the argument that the applicant is well-positioned to advance the endeavor or possesses extraordinary ability. In the standard EB-2, the alternative to a master’s degree requires a bachelor’s degree plus five years of progressive post-baccalaureate experience. In the EB-3 skilled worker category, at least two years of experience or training are required. For H-1B, experience can supplement education to satisfy the specialty occupation requirement. And for the L-1, the applicant must demonstrate at least one continuous year of employment with the corporate group in the three years prior to the transfer.

Primary documents

The dossier should be built in layers, starting with documents carrying the greatest evidentiary weight.

Employment verification letters

These are the central document. USCIS, in the Adjudicator’s Field Manual and the consolidated Policy Manual, expects employment verification letters to include specific information. A solid letter provides:

• Complete employer identification, including address, phone number, and CNPJ or equivalent corporate registration number.
• The applicant’s exact job title and reporting line.
• Precise start and end dates, in month/day/year format.
• Weekly hours and employment arrangement.
• Detailed description of responsibilities, in substantive paragraphs using action verbs and metrics where possible.
• Technical skills used, tools, platforms, and methodologies.
• Salary or salary range, especially in PERM or EB-3 cases.
• Name, title, direct contact information, and physical or qualified digital signature of the supervisor or HR representative.
• Company letterhead, whenever available.

Contracts and formal documents

Pay stubs, service contracts, corporate contracts, formation documents for executive roles, and payroll records complement the letters. For independent contractors and business partners, financial statements signed by an accountant, income tax returns, and issued invoices form the foundation.

Government and tax records

In Brazil, the digital Carteira de Trabalho e Previdência Social (CTPS), the CNIS (National Social Information Registry) extract, and annual income tax returns (DIRPF) are useful as corroborating evidence. These do not depend on employer cooperation, which matters when the employment ended on bad terms or the company has since closed.

When the employer cannot provide the letter

Closed company, bankruptcy, deceased or unavailable former supervisor, or a corporate policy limiting confirmation to dates and titles. In these scenarios, USCIS accepts secondary substitute evidence as provided under 8 CFR 103.2(b)(2). The most commonly accepted alternatives are:

• Affidavits from two or more former colleagues who had direct knowledge of the applicant’s work, with full identification and a description of their professional relationship.
• Consecutive pay stubs covering the claimed period.
• Internal communications, archived corporate emails, or project records.
• Performance reviews signed by the supervisor at the time.
• Public company reports where the applicant’s name appears.

Sworn and certified translation

Documents in Portuguese or any language other than English must be accompanied by a complete translation, per 8 CFR 103.2(b)(3). The regulation requires the translator to certify competence in the language pair and that the translation is complete and accurate. In Brazil, translation is performed by a sworn public translator (tradutor público juramentado) registered with the Commercial Registry (Junta Comercial). For direct use by USCIS, a translation by a competent translator accompanied by an English-language certification is also acceptable.

No apostille is required for documents submitted solely to USCIS. The Hague Apostille becomes relevant for use in U.S. courts and government agencies after immigration.

Dossier format and organization

The petition is read sequentially. A disorganized dossier slows the adjudicator and increases the likelihood of an RFE due to an apparent lack of evidence. Best practices include:

• Organize experience by employer in reverse chronological order.
• For each employer, group the main letter followed by supporting documents.
• Number all pages and include a table of contents at the beginning of the dossier.
• Include a cover letter explaining how each block of evidence connects to the legal requirement.
• Present the translation immediately after each original Portuguese-language document.

Mistakes that lead to RFE or denial

Requests for Evidence in professional experience cases follow predictable patterns. USCIS frequently flags letters that omit specific duties, overlapping periods without explanation, incomplete translations, or the absence of an identifiable signature. Another recurring problem is inconsistency between what the letter states and what the résumé, LinkedIn profile, and pay stubs show.

In standard EB-2 and EB-3 petitions, there is also the issue of experience gained with the petitioning employer itself. The rule under 20 CFR 656.17(i)(3) restricts the use of such experience when the duties are substantially similar to those of the offered position, requiring careful analysis.

Special cases

Self-employed professionals should strengthen their accounting and tax documentation and include affidavits from key clients. Entrepreneurs need to present corporate formation documents, consolidated operating agreements, and financial statements. Academic researchers add grant contracts, advisor statements, and institutional records. Technology professionals often supplement the dossier with technical certifications, public code repositories, and documented participation in open-source projects.

The dossier as a narrative

More than a stack of paperwork, the complete package should tell a coherent story. Title, responsibilities, and impact should progress over time in a way consistent with what the visa category requires. When the documentation is robust and well-organized, proving professional experience stops being a weak point and becomes one of the strongest pillars of the petition.

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.