Mariah Carey And Husband, Nick Cannon
IN PHOTO: Mariah Carey and husband, Nick Cannon, arrive at the 20th annual Screen Actors Guild Awards in Los Angeles, California January 18, 2014. REUTERS/Lucy Nicholson

Mariah Carey is said to be a slave driver and is being sued because of it. A former employee alleged that the soulful singer did not pay her overtime fees even though she was asked to work seven days a week without meal breaks.

Inquisitr reports that Ysler Oliver, a former employee of Mariah Carey back in 2007, was working 16 hour days for the singer. For seven years, Oliver has been loyal to Mariah, despite the rigorous schedule. She claimed she worked exhaustively, cleaning the singer's Tribeca New York Home, handling her suitcases and responding to all her personal needs. She decided to quit this year, in June, because the long hours and lack of overtime pay had finally caught up with her.

Now she's suing for the injustice of it all. According to the lawsuit that was filed in Manhattan federal court, Oliver was Carey's travel companion on various business trips, taking the singer's calls, shopping for her, and caring for Mariah's friends and family. The long hours for seven years made her feel disgruntled and eventually quit. The main problem was that because Oliver was working so much, she put her own family on the backseat. Oliver's lawyer, Matthew Blit, said that Mariah's employee "put her family's life on hold while tending to Mariah Carey's family, and Mariah repaid her by underpaying her." The lawyer claimed that Oliver worked really hard and she deserves overtime pay, as stated by the law. The lawyer made a jab at Mariah and said that even celebrities are obligated to follow the law.

Based on the lawsuit, Oliver is due to have at least time-and-a-half pay when working over 40 hours a week, which she did for Mariah. Oliver claimed she never received a dime of overtime pay from Mariah. If she wins this lawsuit, Oliver is set to receive a "significant amount of money," the lawyer stated.

This is not the first time that Mariah was deemed difficult. She was hailed as one of the music industry's most difficult divas throughout her music career. This year, back in October and on the Perth leg of her tour, Mail Online UK reported that Mariah's name was mentioned again as the culprit that pulled the opening act of Australian singer Natalia simply because she was female. A photographer also claimed Mariah cancelled on a photoshoot for her album cover for no apparent reason.