Both universities have been forced by the Fair Work Ombudsman to back pay staff more than $9 million in stolen wages.

More than 50 students were unenrolled from their courses merely two business days after failing to pay their tuition fees by the census deadline.

According to its latest annual report, CSU owes staff more than $4.8 million in wages and $1.8 million in superannuation, dating back to 2015.