Queensland Premier Annastacia Palaszczuk has laughed off questions about the trustworthiness of a minister who was told which way to vote in a cabinet meeting by a union leader.
Electrical Trades Union secretary Peter Simpson's emailed voting instructions to then energy minister Mark Bailey in 2015 were published in a report on Wednesday night.
Former State Archivist Mike Summerell's previously confidential 2017 report on Mr Bailey's private emails documents their conversation.
Mr Simpson tells the minister that cabinet members will vote on three options to reform workers compensation laws, but adds that option A is the only "acceptable" choice.
"An important one mate, we obviously hope you go for A," the ETU secretary wrote.
Mr Bailey replied: "Will give you a call in the morning comrade, M."
Mr Summerell said of the 1200 emails he analysed, those with the ETU were "very different in nature and tone" from all the others.
He said Mr Bailey seemed to have "difficulty managing" his relationship with the union, which could be in breach of the ministerial code of conduct.
"Unfortunately the interests of the ETU significantly interact with key elements of the Minister's portfolio and his role as a shareholding minister in a number of Government owned Corporations," Mr Summerell's report said.
"These records and the relationship in general are potentially matters that should be considered by the CCC or the Integrity Commissioner in terms of potential breach."
AAP has sought comment from the CCC and the Integrity Commissioner about the report.
Ms Palaszczuk shrugged off questions about the trustworthiness of Mr Bailey, the current transport minister, in parliament on Thursday.
"Queenslanders can trust every member of this government. I'll tell you who Queenslanders don't trust: that guy," she said, pointing at Liberal National Party Leader David Crisafulli.
In another 2015 email examined in Mr Summerell's report, Rail, Tram and Bus Union member Noel Morris sent Mr Bailey a 'hit list' of at least 13 public servants allegedly aligned with the Liberal National Party.
Mr Morris warned the minister they could use budget estimates to apply a "blow torch" and "destabilise the Labor Government".
"This is a real risk from the LNP bureaucrats and backers in the senior ranks of the departments," the RTBU member wrote.
Mr Bailey emailed back to say a person on the list was "def not LNP".
Ms Palaszczuk denied knowing about the hit list on Thursday, triggering howls from the LNP benches.
"If you table the email, I'm happy to have a look at it, I'm happy to look into the matter," she told parliament.
Ms Palaszczuk and Mr Bailey said the minister's use of private emails for government business had been dealt with in 2017, and he had been cleared of wrongdoing by the CCC.
