The popstar and reality TV judge has been pictured in the press partying with friends in Ibiza, while other judges such as Gary Barlow have been working alongside their acts.
Tulisa insisted on Twitter that she isn't neglecting her duties on the show, campaigning for her wildcard act Amy Mottram.
"I'm raving in Ibiza but I still have X Factor on the mind. Lemme just say it again VOTE AMY!" she wrote.
However, some fans have claimed that she isn't offering the same support to her acts that Gary Barlow is giving the Overs category.
Overs wildcard Christopher Maloney revealed this week that he had been taken out for dinner by Barlow and that he felt the Take That star was 100% rooting for him on the show.
"I'm in his top four. He's taken me out for dinner. He's really hands-on," said Maloney.
"He's arranging the music, arranging the songs. He's doing a lot for me. He wants me to go through. We're on a bit of a public campaign this week."
Tulisa is mentoring the Girls category this year and is hoping to secure a second win on the bounce with Ella Henderson, Lucy Spraggan or Jade Ellis.
The X Factor Live Shows start this weekend on ITV1.
