SAN FRANCISCO >> Concession workers at the AT&T Park where the San Francisco Giants play have voted to authorize a strike.

The San Francisco Chronicle (http://bit.ly/13Ph1hI ) reports members of Local 2 voted 500 to 16 on Saturday to OK a strike, but one is not imminent. The union says it’ll wait to see how South Carolina-based concession company Centerplate Inc. responds.

Cashiers, cooks, food vendors and others voted before and after the Giants’ win against the Atlanta Braves. They’ve been working without a contract for three years.

The union says the two sides have been bogged down over money issues and management’s refusal to guarantee a contract would be enforced even if the Giants replaced the concession company.

A spokeswoman for Centerplate called the vote “unfortunate” and “unnecessary” because negotiations are ongoing.