The lawsuit filed Friday in Los Angeles alleges that Cusick, who plays Desmond Hume on the show, fondled the woman's buttocks and breasts and kissed her on the lips in October 2007. The lawsuit claims she reported the incident to her supervisor, but was simply told to avoid the actor. She states she was fired 12 days later in retaliation for reporting the alleged abuse.
The filing says the woman had worked for ABC since 1997.
The lawsuit does not specify how much she is seeking. Messages left for an ABC spokesman and Cusick's manager were not immediately returned.
Related Content from AccessHollywood.com: