A takeaway in Troon is facing a fine of up to £30,000 if it is unable to prove that the required right to work checks were conducted on three of its employees.
Dogars takeaway on West Portland Street was targeted by UK Border Agency (UKBA) officers earlier this month after intelligence was sent to the agency. The raid discovered three Pakistani men working illegally at the premises.
The men are now in detention pending their removal from the country, but the business itself could have more trouble in the pipeline.
A civil penalty notice will be served and, if the employers are unable to provide evidence that they requested a passport of UK work permit, fines of up to £10,000 for each worker will be imposed.
Adam Scarcliffe, assistant director to the UKBA in Scotland, commented: "The UK Border Agency is working constantly to stamp down on people who are in the country illegally and the businesses which employ them.
"Employing illegal workers undercuts honest businesses and defrauds the public purse. There is no excuse for using illegal labour, and if people ignore our immigration laws, we will find them and remove them from the country."
Civil penalty notices are served to hundreds of businesses each year but they can be easily avoided by ensuring the correct checks are conducted when employing overseas workers.