JOHANNESBURG - Trade Union federation, Cosatu, is holding its 14th national congress in Midrand on Monday.
The elective conference will give leaders a mandate on who to back at the ANC's December gathering.
It comes as some unions are not happy with the leadership of President Cyril Ramaphosa.
He's been blamed for job losses amid the electricity crisis.
The federation will also discuss stalled attempts to realign the alliance.