Sexual harassment law developed over the years, starting from the enactment of Title VII in 1964, which prohibits an employer from sex discrimination in employment. For the first time in 1976, sexual harassment was recognized as a form of sex discrimination when a male supervisor towards a female employee in the Williams v. Saxbe case made sexual advances, resulting in an artificial barrier to employment on one gender and not another. Starting in 1977, the Barnes v. Costle case lead to the ruling that a female employee cannot be retaliated against for rejecting sexual advances made by her boss, deeming it a violation of Title VII. In 1986, the sexual harassment is deemed a violation of Title VII, leading to the establishment of guidelines for analyzing whether the sexual behavior was welcome or not. Throughout the eighties, sexual insult, physical violence, retaliation, non-sexual gender based harassment, as sexual harassment. In the nineties, sexually hostile environments, jury trials, and increases in damages are established under Title IV. Additionally, plantiff's can bring claims to the court even if they do not show psychological harm. Additional policies are established as well in regards to an employers liability and the way sexual harassment cases are analyzed.