Yellow-Dog Contract
An agreement in which an employer forbids an employee to join a labor union. Yellow-dog contracts are unenforceable.

Youngstown Steel V. Sawyer (1952)
A U.S. Supreme Court case in which the Court ruled that President Harry S. Truman's seizure of strike-bound steel plants in order to provide materials for the Korean War could not be based on inherent presidential powers, but had to be authorized by statute. Truman immediately halted the takeover.

Youthful Offender
Someone under the age of 18 accused of a crime, who is processed through a juvenile court and juvenile detention or prison facilities instead of regular court, jail, and prison. Courts may have the latitude to try some young defendants as adults, particularly those who are repeat offenders, appear to be beyond rehabilitation, or are involved in major crimes like murder, manslaughter, armed robbery, rape, or aggravated assault. (See also: juvenile delinquent)