Operators of a Vietnamese restaurant in Hobart have been accused of underpaying two workers more than $250,000.
The Fair Work Ombudsman is taking legal action against Xuan A Tran and Quang Manh Dong, who run Vina Yummy Kitchen.
It is alleged the pair in Vietnam recruited a married couple, one of them Ms Tran's sister, who moved to Australia to work at the restaurant from 2015-19.
Ms Tran and Mr Dong are accused of breaching the Fair Work Act by requiring the employees to repay $10,810 of their wages and entitlements in cashback payments.
One worker was allegedly underpaid minimum rates for ordinary hours, leave and weekend entitlements, as well as overtime.
The ombudsman claims the cashback payments and other underpayments resulted in the workers being underpaid $250,312.
It is further alleged Ms Tran and Mr Dong failed to make and keep records, did not give their workers any pay slips and provided the ombudsman with false records.
The operators acted as a visa sponsor for Ms Tran's sister.
Fair Work inspectors investigated the business after the couple lodged a request for assistance.
"All workers have the same rights in Australia regardless of nationality or visa status," Fair Work Ombudsman Sandra Parker said in a statement on Friday.
The ombudsman is seeking court-imposed penalties against the operators, as well as court orders requiring them to back pay the workers, plus interest.
Ms Tran and Mr Dong, who have repaid $6157 to the workers, together face penalties of up to $12,600 per contravention.
The matter is expected to come before the Federal Circuit Court in Hobart on October 7.