Judge Richard Posner, the most-cited legal scholar of the second half of the 20th century and the driving force behind the law-and-economics movement, died on Tuesday, November 10, 2026, in Chicago. He was 87.

His death was confirmed by his son Eric and announced on Wednesday, November 11, by the University of Chicago Law School, where Posner taught for decades alongside his work on the bench. No cause of death has been announced. He is survived by his wife, Charlene, two sons and four grandchildren.

Key Points

• Former US Circuit Judge Richard A. Posner died on Tuesday, November 10, 2026, in Chicago at the age of 87; his death was confirmed by his son Eric and announced on Wednesday by the University of Chicago Law School.
• Posner served 36 years on the US Court of Appeals for the Seventh Circuit, from his appointment by President Ronald Reagan in 1981 until his abrupt retirement in September 2017.
• He wrote more than 3,000 opinions and more than 50 books, and a 2000 study ranked him the most-cited legal scholar of the second half of the 20th century, ahead of Ronald Dworkin by nearly two to one.
• His 1973 book "Economic Analysis of Law" helped found the law-and-economics movement, applying economic thinking to nearly every area of the law.
• He was widely regarded as one of the most influential federal judges never to serve on the Supreme Court, known for his provocative intellect and his public clashes with Justice Antonin Scalia.

What Happened

Posner died in Chicago on Tuesday, November 10, 2026. The University of Chicago Law School, his academic home for decades, announced his death the following day, after his son Eric confirmed it. The announcement gave no cause of death.

The news closed a career that spanned more than half a century in American law. For decades, Posner worked on two fronts at once: the federal bench in Chicago and the lecture halls of the University of Chicago Law School, where he taught generations of students.

His death comes nine years after his abrupt retirement from the bench in September 2017. Even after leaving the court, he kept writing and teaching, and his books and opinions remained among the most cited in American law.

Background and Context

Posner was born in New York City in 1939. He graduated from Yale University and Harvard Law School, and after law school he clerked for Supreme Court Justice William J. Brennan Jr., one of the most influential justices of the 20th century.

In 1981, President Ronald Reagan appointed him to the United States Court of Appeals for the Seventh Circuit, the Chicago-based federal appeals court that covers Illinois, Indiana and Wisconsin. He served on the court for 36 years, until his abrupt retirement in September 2017, writing opinions that shaped the law across the Midwest and well beyond it.

Over that career he authored more than 3,000 opinions, about 3,300 by some counts, and more than 50 books. A study published in 2000 ranked him the most-cited legal scholar of the second half of the 20th century, ahead of the philosopher Ronald Dworkin by nearly a factor of two.

Judge Richard Posner and the Law-and-Economics Revolution

Posner's best-known contribution to legal thought was the law-and-economics movement, which he helped pioneer. Its central idea is simple to state and far-reaching in practice: legal rules can be understood and judged by their economic effects, and the law works best when it encourages efficient outcomes.

His landmark book, "Economic Analysis of Law", published in 1973, applied that idea to nearly every area of the law, from contracts and torts to crime and family law. The book became a standard text in law schools and ran through many editions, and its approach reshaped how judges, lawyers and scholars think about what the law is for.

The movement he helped build changed the American legal academy. Courses in law and economics became a fixture of the curriculum, and economic reasoning became part of the everyday toolkit of judges and advocates.

Reactions and Tributes

The University of Chicago Law School announced Posner's death on Wednesday, November 11, a day after he died in Chicago. His son Eric confirmed the death to the school. The announcement gave no cause of death.

Posner was known throughout his career for his provocative intellect and his intellectual independence. He clashed in public with Justice Antonin Scalia, one of the Supreme Court's most prominent conservatives, in disagreements that drew wide attention in the legal world, a measure of how far his influence reached beyond his own court.

Why It Matters

Posner's death matters because few judges have shaped American law so deeply without ever sitting on the Supreme Court. His opinions guided the Seventh Circuit for 36 years, and his scholarship reached every law school in the country. The combination, a working judge who was also the most-cited scholar of his era, is almost without parallel.

His legacy is also the way he changed how law is argued. Before Posner and the law-and-economics movement, judges rarely spoke in the language of incentives, costs and efficiency. Today that language is part of the fabric of American legal reasoning, in courtrooms and classrooms alike, and in fields from antitrust to criminal sentencing.

That influence is why his passing is news well beyond Chicago and the Seventh Circuit. Judges, lawyers and students across the country learned the law through his books and his opinions.

What Happens Next

Posner's books and opinions will remain in daily use. "Economic Analysis of Law" is still taught in law schools, and his Seventh Circuit opinions remain binding precedent across Illinois, Indiana and Wisconsin, cited by lawyers and judges in new cases.

The University of Chicago Law School, where he taught for decades, was the institution that announced his death, and it is there that much of his legacy lives on, in the law-and-economics tradition he built and in the students he taught. US News Pulse continues to cover the week's other major national stories, including a federal crackdown that has revoked more than 6,000 visas this year.

Frequently Asked Questions

Who was Judge Richard Posner?
He was a judge on the US Court of Appeals for the Seventh Circuit from 1981 to 2017, appointed by President Ronald Reagan, and the most-cited legal scholar of the second half of the 20th century. He pioneered the law-and-economics movement.

How old was Richard Posner when he died?
He was 87. He died on Tuesday, November 10, 2026, in Chicago, and his death was announced the next day by the University of Chicago Law School.

What was his most important book?
"Economic Analysis of Law", published in 1973, applied economic thinking to nearly every area of the law and became a standard text in law schools.

How many opinions and books did he write?
He authored more than 3,000 opinions, about 3,300 by some counts, and more than 50 books over his career on the bench and in the academy.

Did Richard Posner serve on the Supreme Court?
No. He was widely regarded as one of the most influential federal judges never to serve on the Supreme Court.