ellen_yost

Partner

Ellen Yost

ellen_yost
ellen_yost
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Ellen Yost

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T:+1 212 230 2874

F:+1 212 446 0371

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T:+1 212 230 2874

F:+1 212 446 0371

Fragomen in New York, NY

Fragomen, Del Rey, Bernsen & Loewy, LLP

1400 Broadway

New York NY 10018

United States

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  • French

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[email protected]

T:+1 212 230 2874

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Fragomen, Del Rey, Bernsen & Loewy, LLP

1400 Broadway

New York NY 10018

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Ellen joined Fragomen as a Partner in 2001 when the law firm she previously co-founded was merged with Fragomen’s practice. She began her legal career serving as a corporate lawyer for seven years and headed the Canadian Practice Group for a Buffalo, New York firm of more than 100 lawyers. Thereafter, she co-founded a law firm in Buffalo that primarily advised Canadians doing business in the United States in connection with corporate, tax and business immigration law matters.

Ellen concentrated her practice on Canadians entering the United States under the provisions of the North American Free Trade Agreement (NAFTA). Following the merger of her practice with Fragomen, Ellen assisted with the opening of our firm’s first office outside of the United States in Brussels, Belgium.

She practices exclusively in the area of U.S. business immigration law with an emphasis on small and medium-sized corporations. Ellen works with a wide range of industries and highly-skilled or high net worth individuals, primarily citizens of Canada or European countries.

In addition to representing foreign clients in obtaining permission to work or live in the United States, Ellen is actively involved with several international bar associations. She serves as President of the American Foreign Law Association. Ellen is a frequent speaker and author, and she represents the firm at international conferences and meetings with both governments and non-governmental organizations in connection with global business migration.

Ellen is the founder of the Pro Bono Immigration Project of the Bar Association of Erie County, which represents indigent aliens detained at the Federal Detention Facility at Batavia, New York.

Ellen speaks English and French.

In addition to representing foreign clients in obtaining permission to work or live in the United States, Ellen is actively involved with several international bar associations. She serves as President of the American Foreign Law Association. Ellen is a frequent speaker and author, and she represents the firm at international conferences and meetings with both governments and non-governmental organizations in connection with global business migration.

Ellen is the founder of the Pro Bono Immigration Project of the Bar Association of Erie County, which represents indigent aliens detained at the Federal Detention Facility at Batavia, New York.

Ellen speaks English and French.

Education

  • State University of New York at Buffalo School of Law, J.D., 1983
  • Mount Holyoke College, B.A., 1966

More from Ellen

Admissions

Bar Admissions: New York, Balie te Brussel (Flemish Bar – admitted as a Foreign Legal Consultant)

Court Admissions: U.S. District Court, Western District of New York

Practice Limited to Federal Immigration & Nationality Law

Awards

Listed in Best Lawyers in America, 2021 to 2026

Listed in International Who's Who of Corporate Immigration Attorneys, Who’s Who Legal, 2004 to 2008, 2012 to 2024

Listed in New York Super Lawyers, 2006 to 2017

Listed as one of “The Top Women” in immigration in New York, Super Lawyers - New York Metro 2016: The Top Women

Listed in Best Corporate Immigration Lawyers; Who’s Who in the World Who's Who Legal, The International Who's Who of Business Lawyers, 2005

Fellow of the American Bar Association since 1998

Professional accomplishments

Member and Fellow, American Bar Association

President, American Foreign Law Association

Representative to the United Nations Economic and Social Council in Geneva, American Bar Association

Member, Advisory Board, Commission on Immigration, American Bar Association

Liaison to the Union Internationale des Avocats, American Bar Association

Steering Group, UN and International Institutions Coordinating Committee of the Section of International Law, American Bar Association

President, Working Group on Immigration and Nationality Law, Union Internationale des Avocats

Member, Council on International Affairs, Association of the Bar of the City of New York

Member, Task Force on International Legal Practice, Association of the Bar of the City of New York

Member, International Bar Association

Member, Canadian Bar Association

Member, New York State Bar Association

Member, American Immigration Lawyers Association

Former Program Officer, International Law Section, American Bar Association

Former Council Member, International Law Section, American Bar Association

Former Chair, Immigration and National Law Committee, International Law Section, American Bar Association

Former Chair, Canadian Law Committee, International Law Section, American Bar Association

Former Founding Member, International Law Section, New York State Bar Association

Former Chair, Canadian Law Committee, International Law Section, New York State Bar Association

Former Liaison to the Buffalo District Office of the U.S. Immigration and Naturalization Service, American Immigration Lawyers Association, Western New York Chapter

Experience

Assists Canadian clients qualifying for port-of-entry adjudication under the Canada-U.S. Free Trade Agreement and NAFTA to present applications for admission at various U.S. Ports of Entry as intra-company transferees, management consultants, scientific technicians and technologists.

Assists U.S. companies and foreign companies doing business in the United States in obtaining work authorization for highly-skilled foreign nationals hired locally, as well as international assignees. Provides assistance with spousal work authorization, labor certification and all other aspects of nonimmigrant and immigrant visas.

Advises U.S. and foreign companies on immigration compliance issues, including I-9 employment verification program issues and deemed export rules.

Advises companies on the immigration consequences of mergers and acquisitions and assists in enabling the retention of key employees.

Assists medical device manufacturers, technology companies, beverage distributors, international food companies, international accounting firms and law firms in obtaining work authorization for key employees in the United States in a timely and cost-effective manner.

Assists professionally-qualified, adult children of non-U.S. lawyers and accountants throughout the world to obtain authorization to work in the United States in family-owned businesses or other enterprises.

Works with the firm’s Global Visa group and overseas offices to assist companies in gaining permission to engage in business in worldwide jurisdictions Also works with the firm’s Consular Practice group, to assist foreign nationals in obtaining visas at U.S. Embassies and Consulates abroad, as well as foreign Embassies and Consulates in the United States.

Publications and lectures

Ellen G. Yost, Nadia H. Yakoob & Sherri C. Staples, “Immigration Considerations for International Assignments, in International Corporate Practice: a Practitioner’s Guide to Global Success,” 22-1 (Carole Basri, ed., 2008).

Ellen G. Yost & Nancy H. Morowitz, “NAFTA, in Business Immigration Law: Strategies for Employing Foreign Nationals,” (Rodney Malpert & Amanda Petersen, eds., 2007).

“Canada and U.S. Approaches to the Movement of People,” U.S.- Canada Law Journal, Case Western Reserve School of Law (2005).

“Recent Developments in U.S. Immigration Laws Affecting the Entry of Canadians into the United States,” U.S.-Canada Law Journal, Case Western Reserve School of Law (2003).

“Legal Billing Practices in the United States,” Orde van Vlaamse Balies, Advocatentag (2006).

Ellen lectures extensively on a variety of immigration topics to audiences in the United States and abroad. The following are organizations to which she has presented in recent years and the venues of the presentations:

  • American Bar Association: Atlanta, Chicago, Honolulu, New York, San Francisco, Seattle, Washington, - - D.C., Brussels, London
  • Canadian Bar Association: Hamilton, Montreal, Toronto
  • International Bar Association: Buenos Aires
  • New York State Bar Association: New York
  • Association of the Bar of the City of New York: New York
  • Union Internationale des Avocats: Fez, London, Paris
  • Association Internationale des Jeunes Avocats: Antwerp, Sydney, Toronto
  • American Immigration Lawyers Association: New Orleans
  • Flemish Bar Advocatentag: Genk, Belgium
  • The World Trade Organization: Geneva
  • International Organization for Migration: Geneva
  • Institute Universitaire des Hautes Etudes International: Geneva
  • Migration Policy Group: Brussels
  • Quaker United Nations Office: Geneva
  • International Centre for Trade and Sustainable Development: Geneva
  • Global Commission on International Migration: Budapest
  • Agoria: Brussels
  • State University of New York at Buffalo School of Law: Buffalo
  • Seton Hall Law School: Newark
  • EHSAL: Brussels
  • Brooklyn Law School: New York
  • Southern New England School of Law: Dartmouth, MA
  • Belgian-American Chamber of Commerce: New York
  • Canada –U.S. Law Institute: Cleveland
  • Branksome Hall: Toronto
  • Council on Migration Studies: New York
  • Greater Cleveland International Lawyers Group: Cleveland
  • International Taxation Conference: New York
  • Center for International Legal Studies: Salzburg
  • Embassy of Belgium: Washington, D.C.

Ellen’s insights

August 21, 2025 | Awards

Fragomen Attorneys Recognized in the 2026 Edition of The Best Lawyers in America™Read more

August 19, 2024 | Awards

Fragomen Attorneys Recognized in the 31st Edition of The Best Lawyers in America™Read more

August 17, 2023 | Awards

Fragomen Attorneys Recognized in the 30th Edition of The Best Lawyers in America™Read more
More related insights

Ellen’s insights

August 21, 2025 | Awards

Fragomen Attorneys Recognized in the 2026 Edition of The Best Lawyers in America™Read more

August 19, 2024 | Awards

Fragomen Attorneys Recognized in the 31st Edition of The Best Lawyers in America™Read more

August 17, 2023 | Awards

Fragomen Attorneys Recognized in the 30th Edition of The Best Lawyers in America™Read more
More related insights

Ellen’s insights

August 21, 2025 | Awards

Fragomen Attorneys Recognized in the 2026 Edition of The Best Lawyers in America™Read more

August 19, 2024 | Awards

Fragomen Attorneys Recognized in the 31st Edition of The Best Lawyers in America™Read more

August 17, 2023 | Awards

Fragomen Attorneys Recognized in the 30th Edition of The Best Lawyers in America™Read more
More related insights

Country / Territory

  • United StatesUnited States

Get in touch

Languages

  • English
  • French

Contact information

Email

[email protected]

T:+1 212 230 2874

F:+1 212 446 0371

Fragomen in New York, NY

Fragomen, Del Rey, Bernsen & Loewy, LLP

1400 Broadway

New York NY 10018

United States

Connect via Linkedin

Ellen’s insights

August 21, 2025 | Awards

Fragomen Attorneys Recognized in the 2026 Edition of The Best Lawyers in America™Read more

August 19, 2024 | Awards

Fragomen Attorneys Recognized in the 31st Edition of The Best Lawyers in America™Read more

August 17, 2023 | Awards

Fragomen Attorneys Recognized in the 30th Edition of The Best Lawyers in America™Read more
More related insights

Share

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  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Get in touch

Languages

  • English
  • French

Contact information

Email

[email protected]

T:+1 212 230 2874

F:+1 212 446 0371

Fragomen in New York, NY

Fragomen, Del Rey, Bernsen & Loewy, LLP

1400 Broadway

New York NY 10018

United States

Connect via Linkedin

Ellen’s insights

August 21, 2025 | Awards

Fragomen Attorneys Recognized in the 2026 Edition of The Best Lawyers in America™Read more

August 19, 2024 | Awards

Fragomen Attorneys Recognized in the 31st Edition of The Best Lawyers in America™Read more

August 17, 2023 | Awards

Fragomen Attorneys Recognized in the 30th Edition of The Best Lawyers in America™Read more
More related insights

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Get in touch

Languages

  • English
  • French

Contact information

Email

[email protected]

T:+1 212 230 2874

F:+1 212 446 0371

Fragomen in New York, NY

Fragomen, Del Rey, Bernsen & Loewy, LLP

1400 Broadway

New York NY 10018

United States

Connect via Linkedin

Ellen’s insights

August 21, 2025 | Awards

Fragomen Attorneys Recognized in the 2026 Edition of The Best Lawyers in America™Read more

August 19, 2024 | Awards

Fragomen Attorneys Recognized in the 31st Edition of The Best Lawyers in America™Read more

August 17, 2023 | Awards

Fragomen Attorneys Recognized in the 30th Edition of The Best Lawyers in America™Read more
More related insights

Share

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  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Explore more at Fragomen

Media mentions

Bloomberg: Trump’s Green-Card Crackdown Sparks Outcry From Confused Lawyers

Partner Bo Cooper discusses the practical considerations facing employers and foreign nationals amid recent changes to green card processing.

Learn more

Video

Sponsor Guide: Brazil Family Reunion Visa Essentials

In this video, Partner Diana Quintas discusses how Brazil’s family reunion visa supports long-term international assignments and outlines key eligibility, documentation and compliance considerations for employers and families relocating to Brazil.

Learn more

Blog post

Immigration and Employment in Chile: Legal Requirements for Foreign Workers

Attorney María José Clarke explores Chile’s intensified immigration enforcement framework under President José Antonio Kast, examining new employer compliance obligations, work authorization rules for foreign nationals and the legal and financial consequences of unauthorized employment.

Learn more

Media mentions

The PIE: New UKVI compliance metrics for universities take effect today

Senior Manager Jonathan Hill examines how the UK's new RAG rating system and stricter compliance metrics could shape universities' approaches to international student recruitment and sponsorship compliance.

Learn more

Blog post

EU Inc. Signals a Shift: Why Immigration Will Matter to Europe’s New Corporate Agenda 

Knowledge Management Director Ana Sofia Walsh and Senior Client Engagement Manager Soraya Driessen examine the European Commission’s EU Inc. proposal and its potential to reshape corporate structures across the EU, highlighting the resulting complexities and unresolved questions for immigration, work authorization and cross-border workforce mobility.

Learn more

Video

Less Than Two Weeks: FIFA World Cup 2026 Countdown | #MobilityMinute

With less than two weeks until the first match of the 2026 FIFA World Cup, Senior Associate Jake Paul Minster outlines important visa and entry considerations for travelers planning to visit the US, Canada and Mexico.

Learn more

Media mentions

The National: Companionship Scheme Addresses Loneliness Among Elderly as UAE Population Ages

Partner Ali Haider discussed how flexible residency pathways, strong infrastructure and access to healthcare are continuing to drive interest among retirees looking to relocate to the UAE.

Learn more

Blog post

Business Immigration After the Midterms (Part 1): What to Expect No Matter What

Partner K. Edward Raleigh analyzes how post‑midterm US business immigration will shift toward heightened enforcement, worker‑protection scrutiny and cross‑agency oversight, urging employers to align hiring practices, sponsorship decisions and documentation with consistent, defensible workforce strategies.

Learn more

Media mentions

Business Insider: Trump’s Green Card Memo Dropped Before a Holiday Weekend. Immigration Lawyers Say Clients Panicked.

Counsel Brian Hunt said employers quickly sought clarity after a USCIS memo on green card adjustment of status raised questions about immigration timelines, work continuity and travel planning.

Learn more

Awards

Fragomen named “Law Firm of the Year” for Immigration Law by Best Law Firms™ - Australia

Fragomen is named “Law Firm of the Year” for Immigration Law by Best Law Firms™ - Australia and receives National and Regional Tier 1 rankings in Immigration Law.

Learn more

Media mentions

USA Today: USCIS Green Card Announcement Spurs Confusion. What to Know

Partner Parisa Karaahmet discusses the broad application of a USCIS memo to adjustment of status applicants and notes that H- and L-visa holders may have a somewhat easier burden in demonstrating factors that support favorable discretion.

Learn more

Blog post

Commonwealth Games 2026 Travel Planning: UK ETA Rules for Teams and Fans

Senior Manager Alice Spaull and Associate Stephanie Fitton examine the evolving UK immigration and Electronic Travel Authorisation (ETA) requirements for athletes, their support teams and associated guests attending the Commonwealth Games 2026, highlighting key compliance risks and the importance of early travel planning.

Learn more

Media mentions

Bloomberg: Trump’s Green-Card Crackdown Sparks Outcry From Confused Lawyers

Partner Bo Cooper discusses the practical considerations facing employers and foreign nationals amid recent changes to green card processing.

Learn more

Video

Sponsor Guide: Brazil Family Reunion Visa Essentials

In this video, Partner Diana Quintas discusses how Brazil’s family reunion visa supports long-term international assignments and outlines key eligibility, documentation and compliance considerations for employers and families relocating to Brazil.

Learn more

Blog post

Immigration and Employment in Chile: Legal Requirements for Foreign Workers

Attorney María José Clarke explores Chile’s intensified immigration enforcement framework under President José Antonio Kast, examining new employer compliance obligations, work authorization rules for foreign nationals and the legal and financial consequences of unauthorized employment.

Learn more

Media mentions

The PIE: New UKVI compliance metrics for universities take effect today

Senior Manager Jonathan Hill examines how the UK's new RAG rating system and stricter compliance metrics could shape universities' approaches to international student recruitment and sponsorship compliance.

Learn more

Blog post

EU Inc. Signals a Shift: Why Immigration Will Matter to Europe’s New Corporate Agenda 

Knowledge Management Director Ana Sofia Walsh and Senior Client Engagement Manager Soraya Driessen examine the European Commission’s EU Inc. proposal and its potential to reshape corporate structures across the EU, highlighting the resulting complexities and unresolved questions for immigration, work authorization and cross-border workforce mobility.

Learn more

Video

Less Than Two Weeks: FIFA World Cup 2026 Countdown | #MobilityMinute

With less than two weeks until the first match of the 2026 FIFA World Cup, Senior Associate Jake Paul Minster outlines important visa and entry considerations for travelers planning to visit the US, Canada and Mexico.

Learn more

Media mentions

The National: Companionship Scheme Addresses Loneliness Among Elderly as UAE Population Ages

Partner Ali Haider discussed how flexible residency pathways, strong infrastructure and access to healthcare are continuing to drive interest among retirees looking to relocate to the UAE.

Learn more

Blog post

Business Immigration After the Midterms (Part 1): What to Expect No Matter What

Partner K. Edward Raleigh analyzes how post‑midterm US business immigration will shift toward heightened enforcement, worker‑protection scrutiny and cross‑agency oversight, urging employers to align hiring practices, sponsorship decisions and documentation with consistent, defensible workforce strategies.

Learn more

Media mentions

Business Insider: Trump’s Green Card Memo Dropped Before a Holiday Weekend. Immigration Lawyers Say Clients Panicked.

Counsel Brian Hunt said employers quickly sought clarity after a USCIS memo on green card adjustment of status raised questions about immigration timelines, work continuity and travel planning.

Learn more

Awards

Fragomen named “Law Firm of the Year” for Immigration Law by Best Law Firms™ - Australia

Fragomen is named “Law Firm of the Year” for Immigration Law by Best Law Firms™ - Australia and receives National and Regional Tier 1 rankings in Immigration Law.

Learn more

Media mentions

USA Today: USCIS Green Card Announcement Spurs Confusion. What to Know

Partner Parisa Karaahmet discusses the broad application of a USCIS memo to adjustment of status applicants and notes that H- and L-visa holders may have a somewhat easier burden in demonstrating factors that support favorable discretion.

Learn more

Blog post

Commonwealth Games 2026 Travel Planning: UK ETA Rules for Teams and Fans

Senior Manager Alice Spaull and Associate Stephanie Fitton examine the evolving UK immigration and Electronic Travel Authorisation (ETA) requirements for athletes, their support teams and associated guests attending the Commonwealth Games 2026, highlighting key compliance risks and the importance of early travel planning.

Learn more
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Important Updates
Important Updates
June 2, 2026 | New ZealandNew Zealand: English Language Requirements Expanded for Certain Visa Applicants
June 3, 2026 | United StatesBloomberg: Trump’s Green-Card Crackdown Sparks Outcry From Confused Lawyers
June 3, 2026 | CanadaCanada: Ontario Advances Overhaul of Provincial Nominee Program
June 3, 2026 | 🌐Middle East - The Latest News on Mobility and Travel Considerations
June 3, 2026 | United KingdomUnited Kingdom: Migration Advisory Committee Review of Sponsored Work Route Salary Thresholds Published
June 2, 2026 | New ZealandNew Zealand: English Language Requirements Expanded for Certain Visa Applicants
June 3, 2026 | United StatesBloomberg: Trump’s Green-Card Crackdown Sparks Outcry From Confused Lawyers
June 3, 2026 | CanadaCanada: Ontario Advances Overhaul of Provincial Nominee Program
June 3, 2026 | 🌐Middle East - The Latest News on Mobility and Travel Considerations
June 3, 2026 | United KingdomUnited Kingdom: Migration Advisory Committee Review of Sponsored Work Route Salary Thresholds Published
June 2, 2026 | New ZealandNew Zealand: English Language Requirements Expanded for Certain Visa Applicants
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