The six-month investigation included the compiling of a database listing hundreds of workers who claim to have been underpaid, as well as external audits commissioned by the company over the past 18 months that allege "a strong likelihood of unlawful and fraudulent behaviour".

In a statement released to the ASX on Monday, Domino's said the reporting "did not reflect the strong financial performance of its franchise network, the high ethical standards required of all employees and franchisees, or the healthy levels of collaboration between the company and franchisees."

Only 21 franchisees lost money last financial year, while 87 per cent of new store owners last year were either existing franchisees or store managers, which was "an endorsement of the franchise system", the company said.

"There is no reason, no excuse, and no tolerance for any Domino's franchise that chooses not to pay its employees correctly or fails to meet expectations around ethics and governance," the statement says.