The metro workers went on a five-day strike to protest low wages. Despite the announced pause on Tuesday, the metro workers' union threatened to resume the strike on Thursday if their demands for a pay raise and reinstatement for dismissed workers are not met.
The metro workers are seeking a 12.2 percent salary increase in response to the government's $15 billion expenditure on the soccer tournament. The expense has been drawn primarily from public funds, prompting anti-World Cup demonstrations. Protesters criticize the government for investing billions of dollars into a sporting event when the money should be put toward social projects, including housing and salary increases for public servants.
The government is attempting to force metro employees back to work by court order and threat of job loss. A metro spokesman said that as of Monday, 60 pink slips had been issued to staff reportedly involved in the strike.
A union spokeswoman insisted that the dismissed metro workers must be reinstated in order for negotiations to move forward.
Continued disruption of the metro rail could impact Thursday's opening World Cup match between Brazil and Croatia, which will be played at a stadium on the outskirts of Sao Paulo.
Tensions flared Monday when police used tear gas to disperse a crowd of 300 demonstrators who had assembled around Ana Rosa station in central Sao Paulo.