OAKLAND  (AP) — Union officials say workers for a San Francisco Bay Area bus system have rejected a second tentative contract agreement in less than two months.

Amalgamated Transit Union Local 192, which represents nearly 1,800 bus operators, mechanics, dispatchers and clerical workers, voted 561 to 369 Tuesday against a proposed contract after reaching a tentative deal with the Alameda-Contra Costa Transit District last week.

Union President Yvonne Williams says members will meet soon to determine its next steps.

The proposed contract would have given workers a 9.5 percent raise over three years as they would also have to contribute more toward their health plans.

The rank-and-file's rejection marks the second time they have voted down a tentative agreement. The union voted by a 2-to-1 margin against a similar deal in August.