Oncale v. Sundowner Offshore Services, Inc., 523 U.S. 75 (1998) ruled that Title VII prohibits same-sex sexual harassment.
For oral argument: https://www.oyez.org/cases/1997/96-568
Joseph Oncale and his attorneys.
Harris v. Forklift Systems, Inc., 510 U.S. 17 (1993)
In Harris v. Forklift Systems, Inc., 510 U.S. 17 (1993), the Supreme Court ruled on whether an employee has to prove that sexually harassing conduct seriously affected their psychological well being in order to win a Title VII case.