The ANC caucus challenged Cosatu general secretary Zwelinzima Vavi, pictured, yesterday.
"Caucus challenges Vavi to point out any "untouchable deadwood" in the cabinet or any dereliction of duty by any minister," wrote spokesman Moloto Mothapo.
He said they want to discourage "reckless, insensitive" language in opinions on government leaders.
He was responding to Vavi's statement at the weekend when he said some ministers were "deadwoods who remain untouchable". - Sapa