The head of law firm Slater & Gordon says the continued raising of Prime Minister Julia Gillard's role as a union lawyer and allegations from the 1990s that her then boyfriend misused union money are a "sideshow".
"We've really said all we want to say on the public record about that," managing director Andrew Grech told reporters after the company's annual general meeting in Melbourne on Thursday.
Mr Grech said the company had nothing to add to public statements that it had already made.
"So far as we are concerned, it is a sideshow relating to events that occurred nearly 20 years ago and has no relevance."
Mr Grech said that if the proper authorities, such as the police or industrial court, were to inquire into the allegations, Slater & Gordon would co-operate in the investigation.