Three people have been arrested and charged with exploiting migrant workers at an Auckland restaurant chain.

Immigration New Zealand said the trio were arrested at their homes this morning after an extensive investigation.

They face 25 charges, including exploitation of at least three workers, forgery and supplying false and misleading information to immigration officers.

They are also charged with aiding and abetting workers to either breach their visa conditions, or remain in New Zealand illegally.

The department is refusing to confirm the identity of the three people charged, or the restaurant chain.

The three will appear in Auckland district court next week.