Police have raided the Illawarra home of disgraced former union official Kathy Jackson as part of a multi-agency union corruption investigation.

Uniformed and plain-clothed officers from the Victorian and Australian Federal Police spent Wednesday sifting through a large amount of items at the Wombarra property of the former Health Services Union boss.

Police have raided the Wombarra home of Kathy Jackson. Credit:Kirk Gilmour

Ms Jackson was at home at the time and seen helping officers with their investigations.

Wearing gloves, police removed items from the house as well as from a shipping container in the yard and placed them in brown evidence bags, as bemused teenagers from surrounding houses looked on.