A picket will take place outside the Housing Agency's headquarters later in a protest over the reappointment of chairperson Conor Skehan.
It was confirmed on Friday that Mr Skehan has been temporarily reappointed, for up to a year, while officials search for a replacement.
He had been expected to step down from the role at the end of last year.
Mr Skehan has drawn criticism after a string of controversial comments about the homeless crisis.
Last week, the housing chief suggested some people could be declaring themselves homeless to 'game the system' and get moved up the social housing waiting list.
Solidarity TDs are leading today's lunchtime protest at the Housing Agency in Dublin.
Meanwhile, homelessness charities have also criticised Mr Skehan's comments.
Niamh Randall is a spokesperson for the Simon Communities, and argued: "There is no evidence whatsoever to support a claim like this.
"I really would be very clear on this: as the chair of the Housing Agency, there's a responsibility in relation to what kind of comments you would make and what kind of information you share."
She added: "If there was a concern of this nature, then presumably the onus was on the Housing Agency to maybe look at exploring that - and that's not what happened here."
