Chu said spending a whole day in briefings was a “loss of opportunity”.
She read all the power points and emails about the briefings and unless she has a question she does not attend.
"There was no need to fill up a day when there are no real outcomes.”
She said briefings cost ratepayers money as it took people out of their day-to-day jobs.
“It's not necessary if there are other ways,” she said.
Chu has attended every city council meeting as it involves deciding on behalf of Riccarton.
She described Riccarton as a very diverse area and admitted it had been difficult to represent everyone.
Also on the Riccarton community board, Helen Broughton said Chu should turn up to the meetings so she could properly represent the Riccarton area.
Broughton was a city councillor for 12 years and understands briefings may not be the most useful use of her time.
But Broughton said Chu needed to be seen doing the right thing and going to the briefings to get a better understanding - suggesting it might need to be compulsory.
Chu is a part of three residents associations within her ward - Deans Ave, central Riccarton, and Ilam Upper Riccarton.
The Central Riccarton Residents’ Association secretary, Garth Wilson, said a meeting would be held this weekend to discuss the issue of Riccarton's representation on the council.
Wilson would not comment until after the meeting.
Ilam and Upper Riccarton Residents’ Association chairman, Jonathan Reddiford, said Chu had not been to a meeting this year.
He acknowledged she had had a lot to do and was happy to have an informal meeting with her after.
But he did say it would be easier if Chu just turned up.
She said she doesn’t always go because often the residents' meetings clash with city council meetings.
But, Reddiford doesn’t blame her.
“The problem is not Catherine, it’s the organisations and we need to review it.”
He said the council should cut down the number of residents' associations as not all were necessary.
The council has not responded to this claim.
Other councillors were approached for comment but did not answer.