BARNSLEY Trades Council is throwing its weight behind a campaign against the so-called bedroom tax.
It's concerned there will be a knock-on effect on the local economy and a subsequent loss of jobs.
Thousands of people have been left in fear they will be unable to pay rent or afford basic food supplies after the government reduced housing benefit for those who have a spare bedroom.
Dave Gibson, senior vice chairman, said it would lead to more people being pushed into poverty.
He added: "Barnsley Trades Council is committed to campaigning against all the Tory attacks in benefits.
"That is why we have set up a benefit justice sub-committee. We fully support the anti-bedroom tax stance and are confident the government can be defeated if we mobilise strongly enough."
A petition signed by more than 1,000 people was handed to the council on Thursday.