Mariah Carey and Nick Cannon are being sued by a former nanny for forcing her to work 100 hours a week without overtime pay.
According to the New York Daily News, Simonette Da Costa has filed a lawsuit claiming that the singer and her estranged husband made her be 'at their beck and call' at all hours of the day.
Papers filed at Manhattan federal court read: "As such, she attended to their needs not only at home, but also during Ms. Carey's travels for her global concerts and appearances."
The nanny earned between $6,000 and $7,200-a-month for looking after the celebrity couple's three-year-old twins Moroccan and Monroe.
She is seeking $100,000 in damages from the 44-year-old Hero singer - who's worth $250 million - and her ex, who last year split up after six years together because 'he wanted to party and she wanted to stay home with the kids'.
Ms Da Costa's lawyer, Eli Freedberg, said: "She was on call 24 hours a day. She was always at their beck and call."
The papers added: "Plaintiff was on duty during all hours of each 24 hour day with no entitlement for breaks, for meals, and even for sleep. Indeed, Ms Carey would often call plaintiff at hours in the middle of the night and demand to be taken to her children or to be updated on the status of her children.
"Ms Carey would not tolerate any delay when she called and plaintiff had to attend to her every demand, spontaneous or otherwise."
Mr Freedberg also alleges that Carey had been 'jealous' of Ms Da Costa's relationship with the twins.
He claimed: "She was caring for the children too well. (Ms Carey) was worried they were getting confused who the mommy was.
"My understanding is that Ms. Carey didn't want the children developing any lasting relationship with the women."
Representatives for the singer have said: "We never comment on our client Mariah Carey's private life"