Atty. William E. Hannum III

Atty. William E. Hannum III

Will is a Partner at Schwartz Hannum PC. Prior to joining the Firm, Will was an associate in the Labor and Employment Law Section in the New York office of Morgan, Lewis & Bockius LLP.

Andover Andover 33 yrs experience 33 year
Call (351) 228-2394 Book Appointment

Profile Summary

About William E. Hannum III at a glance

William E. Hannum III is a Partner based in Andover, Massachusetts, practicing at Schwartz Hannum PC. They have 33+ years of legal experience, licensed to practice since 1993. Their practice focuses on employment and education. Admitted to practice in U.S. District Court, Eastern District of New York (1993), U.S. District Court, Southern District of New York (1993), New York (1993), and U.S. District Court for the District of Connecticut (1995). Educated at University of Virginia (J.D., 1992) and Deerfield Academy (cum laude Amherst College Class of 1986 B.A. magna cum laude Rutgers University Class of 1989 M.A., 1982). Recognitions include AV Preeminent. Active member of American Bar Association, Massachusetts Bar Association, Boston Bar Association (Labor & Employment Section, Co-Chair), New Hampshire Bar Association, New York State Bar Association. Serands clients in Andover, MA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Will is a Partner at Schwartz Hannum PC. Prior to joining the Firm, Will was an associate in the Labor and Employment Law Section in the New York office of Morgan, Lewis & Bockius LLP. Will represents employers in the full spectrum of labor and employment law matters, and he represents independent schools, colleges and universities in a broad range of labor, employment, and education matters
  • Will also regularly counsels non-profit boards on governance issues, acting in the role of general counsel, and also leading board orientations and governance retreats
  • In the area of labor and employment law, Will handles the full range of employment litigation, government investigations, labor relations and collective bargaining, employment counseling, and workplace investigations, as well as conducting workplace training on a broad range of labor and employment law topics
  • He has represented union and non-union employers (including for-profit and non-profit organizations) throughout the United States in a variety of industries, including communications, construction, education, entertainment, financial services, healthcare, insurance, retail, staffing and transportation
  • In the area of education law, Will handles the full range of education law issues, including a full range of education litigation, government investigations, labor matters, education and employment counseling, and education investigations (including in particular Title IX investigations and investigations responding to reports of sexual abuse)
  • Will also helps education clients with the full range of student and employee matters, risk management, compliance, and documentation ranging from employment contracts to handbooks to bullying prevention and intervention plans
  • Further, Will regularly provides training to educational institutions, addressing school governance with school boards, leading orientation for faculty and staff on appropriate boundaries, and educating students on topics such as bullying, cyber-bullying, and sexting
  • Since 2012, Will has been recognized by Chambers USA as a leading attorney in Labor and Employment Law
  • In 2015 BTI Consulting recognized Will as a “BTI Client Service All-Star,” one of 29 labor and employment lawyers in the U.S. to receive such recognition
  • In 2016, he was recognized as a “BTI Client Service All-Star MVP.” Will has also been selected as a Massachusetts Super Lawyer® as a top Labor and Employment attorney in Massachusetts every year since 2004
  • Will is a frequent speaker and author on labor, employment and education law, including presentations at the American Employment Law Council, bar association and MCLE programs, Merrimack Valley Chamber of Commerce, Nantucket Island Chamber of Commerce, National Association of Independent Schools (NAIS), and National Business Officers Association (NBOA), and he has been a guest lecturer at Harvard Law School

Practice Areas Explained

William E. Hannum III's Areas of Practice

Each practice area below reflects the types of cases William E. Hannum III handles, with a brief overview of what that area of law covers.

Employment Law

Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.

William E. Hannum III is one of 169,120 employment attorneys indexed nationally. Browse employment attorneys in Massachusetts →

Education Law

Education attorneys for special education (IEP), school discipline, Title IX, and student rights.

William E. Hannum III is one of 24,079 education attorneys indexed nationally. Browse education attorneys in Massachusetts →

Jurisdictional Context

Why local counsel matters in Massachusetts

Practicing law in Massachusetts. Legal matters in Massachusetts are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Andover are typically filed in the local municipal court or the appropriate Massachusetts state district court, depending on subject matter and amount in controversy. An attorney licensed in Massachusetts brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Massachusetts courts without local counsel or pro hac vice admission.

Looking for additional Massachusetts attorneys? Browse all attorneys in Andover or all attorneys in Massachusetts.

Frequently Asked

Common questions about William E. Hannum III

Where is William E. Hannum III's law office located?
William E. Hannum III's law practice is located in Andover, Massachusetts. The firm is Schwartz Hannum PC. You can contact the office directly through this profile page.
What practice areas does William E. Hannum III handle?
William E. Hannum III focuses on employment, education. Each practice area listed reflects experience handling cases of that type in Massachusetts.
How long has William E. Hannum III practiced law?
William E. Hannum III has 33+ years of legal experience and has been licensed since 1993.
Where did William E. Hannum III go to law school?
William E. Hannum III earned their education at (J.D., 1992); (cum laude Amherst College Class of 1986 B.A. magna cum laude Rutgers University Class of 1989 M.A., 1982).
How can I contact William E. Hannum III for a consultation?
You can contact William E. Hannum III directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has William E. Hannum III received?
William E. Hannum III's notable recognition includes: AV Preeminent.

Education

J.D.
University of Virginia
- 1992
cum laude Amherst College Class of 1986 B.A. magna cum laude Rutgers University Class of 1989 M.A.
Deerfield Academy
- 1982

Awards

AV Preeminent

Bar Admissions

U.S. District Court, Eastern District of New York
Admitted: 1993
U.S. District Court, Southern District of New York
Admitted: 1993
New York
Admitted: 1993
U.S. District Court for the District of Connecticut
Admitted: 1995
U.S. District Court for the District of Massachusetts
Admitted: 1999
Massachusetts
Admitted: 1999
U.S. Court of Appeals, First Circuit
Admitted: 2001
U.S. Court of Appeals, Ninth Circuit and U.S. District Court, District of Colorado
Admitted: 2003
New Hampshire
Admitted: 2008
U.S. District Court, District of New Hampshire
Admitted: 2008

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