Daniel Boyer had a few choice words for Charbonneau commission chair France Charbonneau while reviewing the FTQ's past year.
The union's president said he believes Charbonneau is picking on the FTQ.
He quoted the organisation's former construction boss Jocelyn Dupuis' seven-day interrogation as an example.
He said it was excessively long and that the judge had enough information after just two days.
Boyer added he thinks members of the inquiry already have enough materiel to release their report and recommendations regarding unions.
Hearings on the topic are set to resume on January 13.