Leaked Nehawu letter calls for Zuma to be disinvited from Workers Day rally

That's according to a letter leaked to the media. 

In the letter, Nehawu asks the trade union federation to disinvite the president. 

The rally is expected to take place in the Free State on Monday. 

The letter from Nehawu general secretary Bereng Soke is addressed to Cosatu general secretary Bheki Ntshalintshali.

In the letter Nehawu says it does not believe Zuma is the right person to address the rally.

It says inviting the president would send conflicting messages to members of the trade union federation. 

Nehawu has refused to comment on the letter at this stage.

Cosatu spokesperson Sizwe Pamla also refused to be drawn in on the request contained in the letter. 

However, he says whoever leaked the letter knew exactly what they were doing. 

Nehawu has previously called for the president to resign. 

The union said it can no longer be denied that the leadership of President Zuma is now "untenable".