South Africa's Deputy President Cyril Ramaphosa gestures at an election rally of the ruling African National Congress (ANC) in Port Elizabeth, South Africa April 16, 2016. Photo: Reuters / Mike Hutchings
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JOHANNESBURG - Deputy President Cyril Ramaphosa is addressing the Cosatu midterm review conference in Irene, Gauteng.
Traditionally the governing party sends its president to address this meeting.
But the trade union federation has banned Zuma from speaking at its events.
Ramaphosa is the federation's preferred candidate for ANC president.
The meeting got under way on Monday.
Video: Courtesy DStv channel 403