IT IS all systems go for labour federation Cosatu's "civil disobedience marches" against the introduction of e-tolling on Gauteng's roads and other issues - including the banning of labour brokers - planned for tomorrow.

Official opposition party, the Democratic Alliance, is expected to join the protest.

Cosatu, with more than two million members, has invited even opposition parties and ordinary members of the public to participate in a nationwide protest action it said would be the biggest in years.

Cosatu spokesman Patrick Craven said yesterday there would be a total of 32 marches nationally.

"The marches will be against the introduction of e-tolling system and [calling for] the banning of labour brokers, but contextualised on the high levels of poverty, unemployment and inequality," Craven said.

Though he could not estimate the expected numbers, Craven said that the biggest march would be in Johannesburg.

Johannesburg Metropolitan Police Department spokeswoman Edna Mamonyane said her department was ready to deal with the high volumes of people expected to gather at Beyers Naudé Square in the city centre.

"We are ready to deal with the massive crowds during marches. The SAPS will complement us with its crowd control unit," Mamonyane said, adding that focus would be on the routes from key public transport centres such as train stations and private vehicle routes leading to the city centre.

The routes include streets leading in and out of Johannesburg's Park Station, Faraday and Westgate railway stations, which was likely to affect motorists using De Villiers, Harrison, Jeppe and Simmonds streets.

The marchers would assemble at 9am and are expected to proceed to the department of transport and roads, Steel and Engineering Industries Federation of South Africa and later to Gauteng premier Nomvula Mokonyane's offices in Simmonds street.

The DA has pledged its support for the march. The opposition party's area of concern, though, is on the e-tolling system.

DA leader Helen Zille said: "Yes, we will be marching with Cosatu on Wednesday.

"We are both opposed to e-tolling and we agree on other issues like corruption and free speech. We will also be marching for jobs.

"We oppose any abuses of the labour broking system,but an outright ban on temporary jobs would leave hundreds of thousands of people destitute."

Cosatu has described labour broking as modern day slavery, which needed to be scrapped.

It has said that the e-tolling will affect on the working class and the poor.