Frozen yoghurt chain Yogurberry faces legal pressure to submit to a national audit after it was found to be allegedly underpaying overseas workers thousands of dollars.

Hot on the heels of Fairfax Media revelations about rampant underpayment of 7-Eleven workers, the national fair work watchdog is now taking aim at the national yoghurt retail chain.

Fair Work Ombudsman Natalie James Credit:Jesse Marlow

Young backpackers were allegedly paid as little as $8 an hour at the Yogurberry frozen yoghurt outlet in the World Square shopping centre in Sydney's CBD.

The head of the Australian company and master franchisor of the Yogurberry chain faces legal action and tens of thousands of dollars in fines for allegedly short-changing four Korean nationals who speak little English.