LUBEC – A Maine sea urchin processing company has agreed to pay $26,420 in back wages for incorrect payments to 62 employees.

The U.S. Department of Labor said Wednesday that an investigation found that ISF Trading Co. of Lubec had paid the employees straight time for overtime hours worked and hadn’t paid them for all the hours recorded on their time cards.

Labor officials said ISF also illegally treated the workers as independent contractors rather than as employees. The violations occurred from last October until late February.

Because the company had previous violations, the Department of Labor also assessed a civil penalty of $11,594.

Labor officials said many of the employees were migrant workers who spoke only Spanish.