Sean is recognized as a leader in the field of disability law. He works closely with various public and private sector labor unions to represent their injured members. In 2006 Sean teamed with John Feal and the renowned Feal Good Foundation ("FGF") to assist its 9/11 First Responder Community in their disability claims. Seeing a need for greater federal assistance for this community, Sean joined FGF and union leaders in the halls of Congress to fight for the initial Zadroga legislation. Through sheer determination and "guerrilla advocacy", where First Responders flooded the Congressional leaders offices to advocate for the assistive legislation, the Zadroga Bill was signed into law. Sean was subsequently awarded "The Advocate" award from the FGF for his legal and political guidance. 

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In 2009 Sean joined the law firm of Sherman, Federman, Sambur & McIntyre, LLP and headed up their SSD and Municipal Disability Pension Departments. Becoming a Senior Partner in 2012.

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The firm is now McIntyre, Donohue, Accardi, Salmonson & Riordan, LLP. ("MDASR")