Brazil’s central bank delayed the release of a closely-watched economist survey for the second time as staff members protest to demand higher pay.

Employees plan to strike Tuesday and Wednesday, escalating a months-long labor dispute with President Luiz Inacio Lula da Silva’s government. As a result, the institution’s Focus survey, which incorporates estimates from over 100 analysts on data including inflation and the benchmark interest rate, will now be released on Thursday instead of Monday, its normal publication date.