The Miami -Dade Board of County Commissioners approved Tuesday contracts for three bargaining units of SEIU Local 1991, which represents nurses, physicians and other healthcare professionals at the Jackson Health System.

The 10-1 voice vote was without discussion. Commissioner Bruno Barreiro voted against the contracts without explanation.

Jackson’s executives estimate the agreements will save the struggling system $50 million for each of the next several years, although board member Michael Bileca estimated that the savings would be considerably less.

The union concessions call for a three percent contribution to employees’ pensions, a contribution that virtually all state employees are now required to make. Nurses’ base pay is close to being unchanged, but concessions will mean they will get at least eight fewer days off each year and could be getting less overtime.

Some changes will kick in March 1.

Jackson’s other major union, the American Federation of State, County and Municipal Employees, has yet to reach an agreement. The local is officially at impasse, starting a process that could end with the county commission deciding terms of the contract.