Published on Jun 8, 2014
PROVIDED BY CNNNEXT.COM
Dilma Rousseff says the work stoppage is a systematic campaign against the World Cup tournament.
Operators of subway and overland trains are demanding a 12 percent pay rise.
Their strike has caused commuter chaos in Sao Paulo which will host the opening match of the World Cup.
With five days to go until kickoff, Brazilian authorities are trying to resolve the dispute.
But the striking workers say they'll continue after negotiations with government officials failed on Thursday.
The company that runs the subway system insists it can only afford a nearly nine-percent pay rise.
