ABC News Breakfast is not repeated on iView so there’s no way to verify what you perceived from those comments.
Given 4 Corners had a pro union segment a few weeks back I’d hardly say the editorial line of the network switched that rapidly but they do have an obligation to show a variety of views.
There was a segment broadcast on the ABC midday news regarding the increased pay offer after the freeze to 3%, but the journalist noted this was still well below forecasted inflation. It was a fairly straight news segment.