"Addressing the exploitation of migrants in the hospitality sector is a priority for the Labour Inspectorate.
"Migrant workers employed in restaurants, bars and cafes can be particularly vulnerable in understanding their basic employment rights, and employers must know this mistreatment will not be tolerated."
As well as not paying the minimum wage, final holiday pay was also withheld when each employee finished.
"One employee was left stressed after continually asking to be paid, and the other recognised their employer assumed the exploitation would not be reported to the Inspectorate in order to protect their worker's visa.
"The Labour Inspectorate takes these kinds of cases very seriously. Not only do these employers breach the rights of their employees, they also gain an unfair advantage over the wider business community who are good employers and meet all their obligations."
• MBie encouraged anyone concerned about their employment situation, or the situation of someone they know, to call its contact centre on 0800 20 90 20.