The Democratic Alliance says its march to Cosatu headquarters on Tuesday will be peaceful.
This assurance came after the trade union federation and the ANC accused the opposition party of being opportunistic.
They said the DA decision was ill-informed and will not add value to the debate over labour brokers.
The DA however says their march is to protest Cosatu's opposition to a Youth Wage Subsidy which it says could create more than 400,000 jobs.
Tuesday's march will be led by DA leader, Hellen Zille.