ALP National President Michael Williamson has launched an audacious bid for control of the troubled Victorian wing of the Health Services Union, creating an eastern states conglomerate run by factional ally and the union's national secretary Kathy Jackson.

The HSU's national council met in Sydney yesterday to pass the changes, which will see the Victorian No. 1 and No. 3 branches dissolved and merged into a new super-entity, or "eastern branch" run from Sydney. Under the terms of the merger, around 15,000 Victorian members will be effectively absorbed into the 35,000-strong NSW branch.