However, Dlamini dismissed it as "pure malicious politics driven by certain leaders with agendas", The Sunday Independent reported.

"I have heard about that thing when people failed to get me not to be elected at congress. They said they were going to pass a vote of no-confidence in me," Dlamini told the newspaper.

"But I can tell you, on the second day [of congress] I got the information that someone said 'don't worry he may have succeeded but he's soon going to be voted out on a vote of no confidence'. It will fail because it does not have any basis and [it comes from] those harbouring a desire to get me voted out of office even after congress endorsed my leadership," he was quoted as saying.

Dlamini said he was not worried about those people.

The Congress of SA Trade Unions (Cosatu) leaders were all nominated unopposed at its 11th national congress in Midrand, Johannesburg on Monday.

Dlamini retained is position as president and Zwelinzima Vavi was re-elected Cosatu general secretary.

Dlamini is a firm supporter of President Jacob Zuma.

According to the newspaper, senior leaders aligned to Vavi were plotting for Dlamini's removal.