1. Home
  2. Our People
  3. William H. Tobin

William Tobin is a shareholder and chair of Reinhart’s Employee Benefits Practice. His deep understanding of the law and specialized experience equip him to offer practical, strategic solutions that produce beneficial outcomes for his clients. Bill’s practice is dedicated to advising trustees of Taft-Hartley multiemployer pension plans, health and welfare plans and apprenticeship funds in a variety of industries across the country. He also advises a broad range of retirement and health and welfare benefit plan sponsors, fiduciaries and service providers on ERISA compliance and other legal and regulatory requirements.

Offering counsel that goes beyond the basic legal facts of a matter, Bill serves the goals of his clients by clarifying the nuances involved and forging a path forward that addresses their strategic aims. He’s known for being personable, responsive and exceptionally efficient.

Bill is widely respected in the field and has frequently presented at the International Foundation of Employee Benefit Plans’ annual conference. He regularly shares his experience through speaking engagements to a variety of audiences, and by writing about retirement and health and welfare issues. He is a contributing author of the International Foundation of Employee Benefit Plans’ Trustees Handbook.

In his free time, Bill enjoys outdoor activities such as hiking, running and biking, spending time in Vermont and reading.


  • J.D., cum laude, Boston University School of Law
  • B.A., Middlebury College

Bar Admissions



  • Multiemployer pension plan funding issues
  • Hybrid pension plan development
  • Affordable Care Act issues for multiemployer plans
  • Navigating Internal Revenue Service and U.S. Department of Labor audits
  • Multiemployer plan mergers and consolidations
  • Withdrawal liability matters
  • Assisting with plan design, communication and contracting
  • Assisting plan sponsors regarding investments including private equity, international, real estate and hedge fund of fund investments
  • Assisting clients in correcting retirement plan qualification issues
  • Assisting in ERISA-related litigation, such as collection actions, fiduciary breach claims, benefit denials and withdrawal liability

Honors & Affiliations


  • Best Lawyers in America, Employee Benefits (ERISA) Law


  • Wisconsin Retirement Plan Professionals (former Board of Directors)
  • Milwaukee Bar Association Employee Benefits Section (former Board of Directors)
  • Greater Milwaukee Employee Benefits Council
  • American Journal of Law and Medicine (Articles Editor)

News & Insights


  • Author, “Allocation and Delegation of Fiduciary Responsibility,” Chapter 5 of The Trustee Handbook: A Guide To Labor-Management Employee Benefit Planspublished by the International Foundation of Employee Benefit Plans (Eighth Edition)
  • Author, “Allocation and Delegation of Fiduciary Responsibility,” Chapter 12 of Self-Funding Health Benefit Plans (J.C. Garner, editor), published by the International Foundation of Employee Benefit Plans (2015)