Lady Gaga claims she is "completely aghast" at her former assistant's lawsuit against her.

The "Applause" hitmaker is being sued by her ex-best friend Jennifer O'Neill, who claims the singer owes her $380,000 in overtime payments because she had to spend 24 hours a day with her and share the same bed during The Monster Ball tour in 2010.

The 27-year-old star has submitted a 200-page witness statement to give her side of the story, in which she explains that she rewards her hardworking staff with perks rather than overtime pay: "I am quite wonderful to everyone that works for me. I am going to tell you exactly what ******* happened, so that the judge can read on this transcript exactly what's going on, which is my ex-best friend is a ******* hood rat who is suing me for money that she didn't earn. The job was essentially a favor, and Jennifer was majorly unqualified for it."

Lady Gaga also claims that personal assistants are rarely paid overtime in the entertainment industry.

Jennifer previously testified that she felt it was a "required" part of her job to sleep with her employer. "I was by her side virtually 24 hours a day, seven days a week. That includes sleeping in the same bed with her. Because she did not sleep alone. Unlike anybody else on that tour, I did not have my own hotel room. I was not asked if I wanted my own hotel room," she said.

The court case is set to begin on November 4 in New York City and could have landmark repercussions for entertainment industry employees.