• M.A. (Law and International Affairs)
    American University School of International Service
  • J.D.
    American University Washington College of Law
    cum laude
  • B.A. and B.S.
    Ohio University
    summa cum laude

Erin Sweeney advises on all facets of healthcare, including Affordable Care Act (ACA) compliance, health privacy (HIPAA), welfare benefit claims, health insurance continuation (COBRA), U.S. Department of Labor (DOL) audits and investigations, and employee benefit plan administration, including the application of Title I of ERISA to such plans. Ms. Sweeney counsels and represents parties in litigation regarding fiduciary obligations, including plan investments, fee disclosure, and prohibited transactions and exemptions. She also provides advice concerning post-retirement medical benefits and the employee benefits provisions of the Americans with Disabilities Act (ADA) and the Age Discrimination in Employment Act (ADEA). 

Ms. Sweeney previously served as Senior Benefit Law Specialist for the Division of Fiduciary Interpretations at the DOL. She was appointed as the designated representative to quarterly DOL Office of Enforcement meetings and developed and conducted DOL auditor training. She was a primary architect of the DOL’s qualified default investment regulation proposal that impacts mutual funds, investment managers, employers, and plan trustees. She received an Exceptional Achievement award for her participation in drafting the Pension Protection Act, the most significant pension legislation since the enactment of ERISA, which affects virtually all pension plans, employers, plan investment managers, and plan service providers. Ms. Sweeney also served as an expert witness for the United States in multiple ERISA matters.

Prior to joining Miller & Chevalier, Ms. Sweeney was Counsel at Latham & Watkins LLP, Paul Hastings LLP, and Dickstein Shapiro LLP, and an Associate at Arent Fox LLP.

  • Senior Benefits Law Specialist, Office of Regulations and Interpretations, United States Department of Labor, 2003 - 2007 
  • Chambers USA: Employee Benefits & Executive Compensation (District of Columbia), 2019
  • The Best Lawyers in America®: Employee Benefits (ERISA) Law, 2018 - 2020
  • DC Bar Capital Pro Bono Honor Roll, 2015, 2018
  • DC Bar Capital Pro Bono High Honor Roll, 2016 - 2017
  • Fellow, American College of Employee Benefits Counsel
  • Exceptional Achievement Award, U.S. Department of Labor
  • Senior Editor, Employee Benefits Law
  • Vice Chair, Employee Benefits Committee, Section of Taxation, American Bar Association
  • Co-Chair, ERISA Subcommittee, Employment Rights and Responsibilities Committee of the Labor and Employment Law Section, American Bar Association
Bar Admissions
  • District of Columbia
  • New York
  • Pennsylvania
Court Admissions
  • United States Supreme Court
  • United States Court of Appeals for the District of Columbia Circuit
  • United States Court of Appeals for the Fourth Circuit
  • United States Court of Appeals for the Fifth Circuit
  • United States Court of Appeals for the Eleventh Circuit
  • United States District Court for the District of Columbia
  • United States District Court for the District of Maryland
  • United States District Court for the Southern District of New York
  • United States District Court for the Eastern District of Pennsylvania
  • United States Tax Court

In the closely-watched case challenging the constitutionality of the entire Affordable Care Act (ACA), Texas v. United States, the U.S.

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