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Sean G. Hanagan

White Plains

P 914-872-6879
F 914-946-1216


Sean G. Hanagan is a Principal in the White Plains, New York, office of Jackson Lewis P.C.

Working with human resources professionals and in-house counsel, he helps employers develop business solutions and policies for the hire and movement of international staff. Mr. Hanagan advises on I-9 employment eligibility verification, E-Verify and social security issues, and on best practices to avoid hiring-related discrimination. He defends companies subject to government audits and investigations, and guides employers through the process of securing employment visas for critical foreign staff. Mr. Hanagan speaks regularly before employer organizations and writes on workplace law subjects.

He studied Japanese and International law at Temple University Japan, in Tokyo.

Practice Focus Areas

  • Assuring immigration benefits compliance by advising on DHS post-approval site visits and public access files for visa petitions, and training employers’ staff on proper records maintenance
  • Conducting I-9 internal audits and developing Social Security No-Match notification procedures and policies for employers
  • Creating and implementing employee I-9 verification procedures and programs that meet ICE and civil rights requirements
  • Representing employers under immigration investigations, civil I-9 audits, or who have been subject to ICE worksite operations
  • Negotiating with ICE on behalf of corporate clients to reduce or avoid costly fines and federal contract debarment
  • Conducting internal reviews of potential violations of employee verification policies and immigration laws, and formulating action plans to ensure legal compliance
  • Reviewing the verification processes of clients’ contractors and temporary worker providers
  • Developing employee recruiting and hiring strategies to minimize visa cap implications and maximize potential use of cap exemptions and alternative avenues to the H-1B category
  • Counseling employers on international transfers and travel strategies for executives, managers, engineers, scientists, chemists, athletes, and specialized and key employees, including advice regarding security issues that may affect entry to the United States
  • Preparing and filing temporary employment visa petitions, including among others E, I, J, H, L, O, P, R and TN visas

Honors and Recognitions

  • Business Council of Westchester, “40 under 40 Rising Star” (2008)
Legal 500 Recommended Attorney

Professional Associations and Activities

  • American Bar Association, Immigration Section
  • American Bar Association, Labor and Employment Law Section, Immigration and Human Trafficking Committee, Vice-Chair
  • American Immigration Lawyers Association


Pro Bono and Community Involvement

  • Japan Society
  • Rotary International

Published Works

  • Immigration For Employers, bi-annual newsletter Contributor and Editor, and editor of practice group blogs, articles and quarterly immigration e-blast
  • “Employing International Workers," Inside the Minds series (2013 Edition) [Chapter Author]
  • “Workplace Law Implications of 2012 Presidential Election,” Jackson Lewis Preventive Strategies (October 2012)
  • “How The Immigration Policy Stalemate is Hurting Businesses and the Economy,” Inside Counsel (July 2012) [Quoted]

Speeches and Presentations

  • “U.S. Immigration Law Reform: What You Don’t Hear in the Press,” American Bar Association Labor And Employment Mid-Winter Conference (March 2014)
  • Pro-Bono Partnership Immigration Presentation, Westchester, New York (November 2013)
  • “Legal Quick Hit: Employment-Based Immigration Options for Foreign Workers in the U.S.” Association of Corporate Counsel Webcast Presentation (June 2013)
  • “Immigration Reform: The Employment Perspective,” American Bar Association CLE Webinar (April 2013)
  • NAPABA Northeast Regional Conference Speaker (June 2011)

See AllSean G. Hanagan in the News

June 16, 2016
Jackson Lewis

Jackson Lewis Earns Top-Tier Ranking in 2016 Legal 500

June 16, 2016

WHITE PLAINS, NY (June 16, 2016) Jackson Lewis P.C., one of the country’s preeminent workplace law firms, has been recommended as a Top-Tier Firm in the Labor and Employment – Labor-Management Relations category in the 2016 edition of The Legal 500 United States.  The firm was also recommended in the Immigration, Labor... Read More

April 8, 2016
Law 360

Sean Hanagan Discusses Implications of a Recent Visa Fraud Sting Operation

April 8, 2016

Sean Hanagan discusses implications of a recent visa fraud sting operation in “Visa Sting is a Stark Reminder to Scrutinize Recruiters,” published by Law 360. Subscription may be required to view article. Read More

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October 12, 2016

Jackson Lewis Employers’ Immigration Update - No. 22, October 2016

October 12, 2016

Supreme Court Tied on Expansion of Obama Deferred Deportation Orders The U.S. Supreme Court’s 4-4 tie in a case appealing a nationwide injunction on the Obama Administration’s plans to expand the Deferred Action for Childhood Arrivals (DACA) and create the Deferred Action for Parents of Americans and Lawful Permanent... Read More

March 11, 2016

Jackson Lewis Employers’ Immigration Update - No. 21, March 2016

March 11, 2016

H-1B Cap Filing Alert Each year, the U.S. Citizenship and Immigration Services issues 65,000 H-1B visas and 20,000 “master’s cap” visas. April 1, 2016, is the first day on which an H-1B petition may be filed for FY 2017, in anticipation of an October 1, 2016, start date. Last year, USCIS accepted 233,000 petitions in... Read More

January 5, 2016

Hospitals, Medical Providers Come under Scrutiny for Potentially Discriminatory Ads

January 5, 2016

The U.S. Department of Justice’s Office of Special Counsel for Immigration-Related Unfair Employment Practices (OSC) has been notifying hospitals and medical providers by letter that their advertisements placed through the Centralized Application Service for Podiatric Residencies (“CASPR”) for podiatric residency... Read More

See All Webinars


Watch Now

Immigration in the Crosshairs: Heightened I-9 Enforcement and Visa Challenges for Hospitality Employers

March 1, 2018 - 2:00 PM to 3:00 PM EST

Credits: Continuing education credit was offered for the live broadcast of this seminar.
You cannot earn credit for watching the archived webinar.

Watch Now

See AllBlog Posts by Sean G. Hanagan

Social Security Administration ‘No Match’ Letters to Employers Make Another Comeback
December 14, 2018

Social Security Administration (SSA) has begun notifying employers that the information reported on an individual employee’s W-2 form does not match the SSA’s records with “Request for Employer Information” letters, known as “No-Match” letters. Read More

State Department to Release New Visa Restrictions on Students from China
June 6, 2018

New restrictions on visas for citizens of China are expected as soon as June 11, 2018, according to the Associated Press. These restrictions, the report states, would target students in high-tech fields such as robotics and aviation. Read More

Insights: Responding to Temporary Protected Status Extensions and Terminations
November 8, 2017

Having terminated Temporary Protected Status (TPS) for Guinea, Liberia, and Sierra Leone in May 2017 and having announced the limited extension of TPS for Haiti and Sudan until January and November 2018, respectively, the Trump Administration has turned its attention to Central America. Read More