CFMEU marches on Parliament, calls for Jackie Trad to resign

A powerful Queensland union has marched on Parliament, calling for Deputy Premier Jackie Trad to quit and the Cross River Rail Delivery Authority to be scrapped.

It comes as Ms Trad faced another grilling during question time on Thursday over the government's integrity crisis.

Hundreds of building workers from the CFMEU gathered for a noisy rally outside Parliament on Thursday, sending a strong message to Queensland's Labor government.

CFMEU state secretary Michael Ravbar, from Ms Trad's dominant Left faction, warned if the Palaszczuk government wanted to win the next state election, the Deputy Premier must resign.

He also alleged the $5.4 billion Cross River Rail project was hamstrung by "bureaucratic bungling".

"Right now we have more energy and political capital being spent on Jackie Trad's $700,000 investment property than we do on the largest infrastructure project in Queensland," he said.

CFMEU protesters outside Queensland Parliament House on Thursday.

"The CRRDA, along with Ms Trad, is simply not up to the task of managing a project that will deliver real benefits for Queensland workers, for business, the residents of south-east Queensland and indeed taxpayers in the state."

The LNP repeatedly targeted Ms Trad over the purchase of her contentious Woolloongabba house in question time each sitting day this week.

Ms Trad has been under fire over the purchase of a $695,500 property near a proposed Cross River Rail station by her family trust, a project for which she had ministerial responsibility, and failing to declare it on her register of members' interests within the required time frame.

The Crime and Corruption Commission is assessing the issue after its referral to the body by the LNP and Ms Trad.

Ms Trad has previously pledged to stand down from the ministry if the CCC decided to launch a formal investigation.

LNP industrial relations spokesman Jarrod Bleijie, not usually an ally of the union, threw his support behind the CFMEU's calls.

"You know it's bad when even your union overlords say you're out of touch," he said.

"The CFMEU are calling for the Deputy Premier Jackie Trad to be sacked - the government should listen."