Workers building a 2014 World Cup stadium in northeastern Brazil have ended a two-day strike after reaching a deal with their contractors.

The union representing the workers said they accepted the contractors' proposal and returned to the construction site on Tuesday in Sao Paulo, two days after going on strike to demand payment of delayed salaries.

At least four other host cities have been affected by workers' strikes in the past, including Rio de Janeiro, home of the final at Maracana.

Unions said recently they were trying to centralize efforts and have threatened a work stoppage in all 12 host cities to demand unified salaries and benefits.