An inquiry into a rogue union's domination of a state's construction industry will resume with two key witnesses to be recalled for cross-examination.
The inquiry into the CFMEU in Queensland has been extended through to December by the Crisafulli government and will resume on Tuesday.
Months of hearings have exposed evidence of bullying, intimidation and violence on worksites.
Nigel Hadgkiss, former commissioner of the Australian Building and Construction Commission, will return to the stand on Thursday after providing testimony in April.
He urged the state to adopt a building code of practice to rein in the CFMEU, telling the inquiry that reform would not be possible until contractors were more frightened of the regulator than the union.
Mr Hadgkiss said contractors were unable to challenge the union's power on worksites because they were reliant on work from the former state Labor government, with whom the union had a close relationship.
