He was a law clerk for Chief Justice Raymond S. Wilkins of the Massachusetts Supreme Judicial Court from 1967 to 1968.

[2] On March 10, 2021, Young advised President Joe Biden that he intended to retire from regular active service on July 1, 2021, and that he would serve as a senior judge thereafter.

[3] In January 2024, Judge Young blocked the $3.8 billion merger of Spirit Airlines and JetBlue, stating that it would violate the Clayton Act, which “was designed to prevent anticompetitive harms for consumers.” Ten months later, Spirit Airlines announced plans to file for bankruptcy.

He was the trial judge in Massachusetts state court for the highly publicized[8] 'Big Dan' rape case[9] which was the inspiration for the movie The Accused starring Jodie Foster.

Judge Young partially invalidated the city ordinance because it was preempted by Federal Aviation Administration regulations.