Woolworths has been accused of unethical and potentially illegal conduct after a widely shared internal document that included personal details on regular and high value pokie machine users was leaked.

The document was shared on a Google drive that could be accessed by staff in the 400 pubs the supermarket giant controls though the ALH group. Whistleblowers provided the document to the office of anti-pokie Tasmanian MP Andrew Wilkie, who in turn handed it over to Fairfax.