Twitter Inc has secured a ruling allowing the social media company to force several laid-off workers suing over their termination to pursue their claims via individual arbitration rather than a class-action lawsuit.

US District Judge James Donato on Friday ruled that five former Twitter employees pursuing a proposed class action accusing the company of failing to give adequate notice before laying them off after its acquisition by Elon Musk must pursue their claims in private arbitration, Reuters has reported.

Donato granted Twitter’s request to force the five ex-employees to pursue their claims individually, citing agreements they signed with the company. Twitter did not immediately respond to a request for comment.

The San Francisco judge left for another day “as warranted by developments in the case” whether the entire class action lawsuit must be dismissed, though, as he noted three other former Twitter employees who alleged they had opted out of the company’s arbitration agreement have joined the lawsuit after it was first filed.

The lawyer who represents the plaintiffs, Shannon Liss-Riordan, said on Monday that she had already filed 300 demands for arbitration on behalf of former Twitter employees and would likely file hundreds more.

Those workers all claim they have not received the full severance package promised by Twitter before Musk took over. Some have also alleged sex or disability discrimination.

Last year, Donato had ruled that Twitter must notify the thousands of workers who were laid off after its acquisition by Musk following a proposed class action accusing the company of failing to give adequate notice before terminating them.