A company executive at the centre of a blackmail case against two Victorian union officials will be questioned by defence lawyers for a third consecutive day.
The CFMEU's Victorian secretary John Setka and assistant secretary Shaun Reardon are facing a pre-trial committal hearing, where they're fighting charges they blackmailed two Boral managers during a meeting in 2013.
It's alleged the union pair made unwarranted demands of executives Paul Dalton and Peter Head at North Melbourne's Auction Rooms cafe on April 23, 2013.
Mr Dalton is due to return to Melbourne Magistrates Court on Thursday for a third day of cross-examination.
The Boral manager made a 35-page statement to police in April 2015 about his interactions with Setka and Reardon.
At the time the CFMEU was waging an industrial campaign in Melbourne against construction company Grocon, which Boral supplied with concrete.
Setka and Reardon were charged in 2015 after an investigation by a joint Victorian and federal police unit, following a referral by the Royal Commission into Trade Union Governance and Corruption.
More than 20 witnesses are scheduled to give evidence at the committal hearing, which will determine if Setka and Reardon stand trial.