Lois E. Jenson v. Eveleth Taconite Co. was the first class-action sexual harassment lawsuit in the United States. It was filed in 1988 on behalf of Lois Jenson and other female workers at the EVTAC mine in Eveleth, Minnesota on the state's northern Mesabi Range, which is part of the Iron Range.
Jenson first began working at the site in March 1975 and along with other women, endured a continuous stream of hostile behavior from male employees, including sexual harassment, abusive language, threats, stalking and intimidation. On October 5, 1984, she mailed a complaint to the Minnesota Department of Human Rights outlining the problems she experienced. In retaliation, her car tires were slashed a week later. In January 1987, the state's agency requested that Ogelbay Norton Co., a Cleveland, Ohio-based part-owner of the mine, pay US$6,000 in punitive damages and $5,000 to Jenson for mental anguish, but the company refused.
On August 15, 1988, attorney Paul Sprenger filed Lois E. Jenson and Patricia S. Kosmach v. Eveleth Taconite Co. in U.S. District Court in the U.S. District Court in Minneapolis. Class-action status was requested at the time, and granted by James M. Rosenbaum on December 16, 1991. Jenson quit working at the mine on January 25, 1992, and was diagnosed with post-traumatic stress disorder a short time later.
A liability trial began on December 17, 1992, in front of Judge Richard Kyle in St. Paul, Minnesota, and six months later, he ruled that the company should have prevented the misconduct. The company was ordered to educate all employees about sexual harassment.