O'Keeffe started refereeing whilst at medical school in Dunedin and quickly progressed through the ranks. He has featured in the Heartland Championship, ITM Cup, as a Super Rugby assistant and at the 2014 Junior World Championship where he earned appointment to the final between England and South Africa.
His father Peter also refereed at provincial level and when he's not in the middle, O'Keeffe practices as an eye doctor in Wellington, New Zealand.
Pretoria-born Van Heerden meanwhile is an Advocate to the High Court of South Africa and joins Super Rugby ranks having made rapid progress applying law on rugby fields throughout his home country.
A University of Pretoria Law Graduate, Van Heerden played rugby for his university before later turning his attention to refereeing.
Ben O'Keeffe (left) and Jaco van Heerden (right)
The duo were among the 16 match officials that attended SANZAR's annual Super Rugby Referee Camp, staged this year at the International College of Management in Manly on Sydney's northern beaches.
In the midst of the three-day camp, SANZAR Game Manager Lyndon Bray said, "Due to the global nature of our sport and the demands of refereeing, it is incredibly rare to have everyone in the same place at the same time, so it's vital that we make the most of opportunities like this.
"Our core objectives for 2015 are 'high intensity, high octane' and affording players the confidence to play and contest for the ball, which aims to consolidate Super Rugby as the best rugby competition in the world; not only as a product of having the best players, coaches and referees, but also because of the way the game is played.
"After consulting the coaches following the 2014 Super Rugby season, we seek to achieve those goals by way of allowing quick ball at the tackle, faster and more positive scrums, proper setup and defence of the lineout to maul area and ensuring there is space across the field to allow the teams to play as they want to."