Oncale v. Sundowner Offshore Services, 523 U.S. 75 (1998), was a decision of the Supreme Court of the United States. The case arose out of a suit for sex discrimination by a male oil-rig worker, who claimed that he was repeatedly subjected to sexual harassment by his male co-workers with the acquiescence of his employer. The Court held that Title VII's protection against workplace discrimination "because of... sex" applied to harassment in the workplace between members of the same sex.