A VicRoads employee with access to the private details of millions of Victorians is being investigated by the state's powerful anti-corruption commission for allegedly providing confidential information to figures linked to organised crime.

The man, who the ABC has decided not to name, has been stood down with full pay by VicRoads while the investigation is conducted.

In recent months, officers from the Independent Broad-based Anti-corruption Commission (IBAC) have raided the man's northern suburbs home and seized phones and computers.

The ABC understands IBAC investigators are looking into whether or not the man provided home addresses to a person with known links to outlaw motorcycle gangs.

A spokesperson for IBAC declined to comment when contacted.

"For legal and operational reasons, IBAC is not able to comment on this matter," the spokesperson said.

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"We generally do not comment on whether we have a complaint or investigation before us.

It is understood the VicRoads worker has been stood down on full pay while IBAC investigates. ( AAP: Tracey Nearmy )

"We will only comment in exceptional circumstances, and when it is in the public interest to do so."

However, the ABC understands the investigation is well advanced and has included the tapping of phones.

IBAC's legislation allows the anti-corruption body to only investigate serious allegations of corruption by public officials and police that would constitute an indictable offence if criminal charges are pursued.

A spokesperson for VicRoads said it was unable to comment on matters that may or may not be under investigation by IBAC.