The treasury expects the public debt to grow at double digits in 2019.
The collapse of a tailings dam in Minas Gerais state is the deadliest mining disaster in Brazil's history.
The commission that pension fund managers (Afores) charge their members is expected to fall to an average of 0.70% by 2022.
In a press release, Moody's said it changed its outlook on Nicaragua's sovereign rating to negative from stable, while also affirming the ratings at B2.
The growing use of technology in projects has reduced costs but also given rise to new risks, says Swiss Re in a report.