Union wants 10111 operators to earn same salary as warrant officers
The police service says contingency plans are in place and emergency call centres will operate as normal.
Wage talks have deadlocked and the operators are set to go on strike on Wednesday.
The union's Mpho Kwinika has accused the employer of not being willing to negotiate further.
“These are the people who linked police on the ground with communities. Their work is as important as a police officer’s work. We view this as an essential service.”
Meanwhile, police management says that plans are in place to ensure call centres continue to operate ahead of the strike.
The police's Sally de Beer says that uniformed members will be brought in to man the phones.
“These are the Public Service Act employees who are threatening to strike. We’re not saying all employees will embark on strike, but we’ve put employees on site at call centres to ensure members perform those duties.”