Final answer:
Faragher v. City of Boca Raton is the U.S. court ruling that distinguished between supervisor harassment that results in tangible employment action and supervisor harassment that does not.
Step-by-step explanation:
The U.S. court ruling that distinguished between supervisor harassment that results in tangible employment action and supervisor harassment that does not is Faragher v. City of Boca Raton. In this case, the Supreme Court held that an employer can be held liable for supervisor harassment that results in a hostile work environment and does not require a tangible employment action. Supervisor harassment that does not result in a hostile work environment or a tangible employment action may still be actionable, but the employer has the opportunity to avoid liability by showing that it took reasonable steps to prevent and promptly address the harassment.