BERKELEY (AP) — The University of California, Berkeley has been ordered to pay back at least $5 million in tuition and fees to hundreds of teaching assistants who complained they were hired at a part-time rate but worked close to the 10-hour-per-week minimum to qualify for benefits.

The union representing UC student workers filed a grievance over two years ago, alleging the teaching assistants, including many undergraduates, were hired to work at the campus’ Electrical Engineering and Computer Sciences department for eight hours per week.

READ MORE: San Francisco Celebrates Rise of Lowrider Community With Car Show and Cruise

By doing so, the university avoided paying contractually mandated tuition, fees and child care it otherwise would have to provide to employees who work at least 10 hours per week, the UC Berkeley chapter of the Academic Student Employees at the University of California alleged.

READ MORE: San Francisco Schools, Public Health Dept. Partner to Provide Campus COVID Vaccinations

An arbitrator in the case ruled in favor of the union on Monday. A UC Berkeley spokeswoman said the university will issue a statement on the decision later Wednesday.

A union representative told the East Bay Times the ruling affects about 1000 teaching assistants, each owed somewhere from $6,500 to $7,500 per semester that they worked.

MORE NEWS: Small Earthquake Rattles East Bay Hills Near San Ramon

© Copyright 2020 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.