Public servants are increasingly witnessing misconduct on the job, prompting calls for a national anti-corruption watchdog.
An Australian Public Service Commission survey has found 4,119 public servants across across 59 agencies had seen misconduct in 2016-17.
This represents five per cent of respondents, up from 2.6 per cent in 2013-14.
Code of conduct investigations into 596 bureaucrats were finalised in 2016-17, with breaches found in 89 per cent of cases.
Acting opposition leader Tanya Plibersek said the survey results were concerning and she was open to the idea of a federal integrity commission.
Labor pushed to have a Senate inquiry into the matter set up last year and it reported back to parliament in September.
"Malcolm Turnbull is still yet to formally respond. We call on him to do so," she told AAP.
Comment has been sought from the government.
Australian Greens leader Richard Di Natale said there was a culture in many institutions of keeping quiet.
"We don't have very strong whistleblower protections in Australia," he told reporters in Melbourne on Wednesday.
He said a national watchdog would provide individuals with the opportunity to provide information to a body that has powers to be able to investigate that corruption with little risk to themselves in terms of their future employment.
The progressive Australia Institute think-tank echoed calls for a federal Independent Commission Against Corruption.
It said polling showed support for a federal anti corruption body stood at 88 per cent.
"There is another concern that a weak body could be set up - one, for example, that doesn't have to power to hold public hearing," the institute said in a statement.
Of the public servants who witnessed corruption in 2016-17, more than 60 per cent said they'd seen evidence of cronyism.
Others reported nepotism and "green-lighting", or the making of official decisions which improperly favour a person or company.
