Integrity experts have urged the Andrews government to act swiftly to tackle the risk of "grey corruption" by political staffers, after a damning report by the state's anti-corruption watchdog.
On Wednesday, the Independent Broad-based Anti-corruption Commission (IBAC) handed down its findings in Operation Daintree, which explored the awarding of a lucrative contract to a Labor-allied health union in 2018.
The commission found that senior political advisers working for Premier Daniel Andrews and two former health ministers interfered and pressured public servants to award the $1.2-million contract to the Health Workers Union, without a tender process.