Workers of the Brazilian state oil company Petrobras, block the main entrance of the Duque de Caxias refinery in Caxias, 70 km from Rio de Janeiro, on March 24, 2009. (Antonio Scorza/AFP/Getty Images)
Joao Antonio de Moraes, coordinator of the strike for the oil workers' umbrella union, said four days of talks with the company ended on Friday afternoon with concessions by the company on all of their key demands.
He said workers would return to their posts Friday.
