William T. Leder

William T. Leder is a New York personal injury attorney who has dedicated his career seeking justice and fair compensation for those who are injured because of the carelessness, negligence or malpractice of others.

The founder of the LAW OFFICE OF WIILAM T. LEDER, PLLC, he has helped recover millions of dollars for his clients through jury verdicts, arbitrations, mediations and settlements.

Mr. Leder focuses on serious personal injury matters involving motor vehicle accidents, truck accidents, construction site accidents, including scaffolding and ladder falls, trip and fall accidents, stairways, other premises accidents, dog attacks, nursing home neglect/abuse, as well as all types of municipal claims arising through the negligence of the City of New York, the New York City Transit Authority, and other municipal entities. He has also represented employees in employment-related matters including discrimination and sexual harassment claims.

Mr. Leder is well respected by his peers in the legal community, with many other attorneys referring personal injury matters to his firm.

Mr. Leder is admitted to practice law in New York State and Federal Courts and is an active member of both the New York State Trial Lawyers Association, New York State Bar Association and the New York State Academy of Trial Lawyers. He has cases in all NYC counties, Long Island and upstate.

William Leder earned his law degree from St. John’s University School of Law in 1997, where he graduated with Dean’s List Honors. While at St. John’s School of Law, he was president of the Labor and Employment Law Society and is published in the Labor Law Journal. He earned his Bachelor of Arts degree from Hobart College in 1988. Prior to law school, Mr. Leder worked as a union organizer in the central and southwest states.


  • J.D. - St. John's University School of Law, 1997

  • B.A. - Hobart College, 1988

Bar Admissions

  • New York, 1998

  • U.S. District Court for the Southern District of New York, 1998

  • U.S. District Court for the Eastern District of New York, 1998

Professional Associations

  • New York State Academy of Trial Lawyers

  • New York State Bar Association