Saying they've faced threats and intimidation as they've attempted to organize with a union, hundreds of workers at Boston's Logan Airport voted to strike, according to local union leaders.

No date for the strike has been set.

The workers are cleaners and wheelchair attendants who are employed by two JetBlue subcontractors, FSS and ReadyJet. They're pushing for higher wages and better treatment from the subcontractors, union leaders say.

A JetBlue spokesperson told MassLive in an email they plan to run their normal schedule on Friday.

"Customers with concerns are welcome to check the status of their flight at jetblue.com, or via JetBlue mobile app," the spokesperson said. "JetBlue is committed to ensuring an appropriate wage for airport workers. We have long been on the record urging our business partners to be responsive to the needs of their employees."

The strike vote was announced at the downtown offices of the Service Employees International Union 32BJ, which is working with the employees.

"Workers in this country have a legal right to organize," Roxana Rivera, one of the union's leaders, told the employees in the room, who had come off an earlier shift.

Boston Mayor Marty Walsh, a former labor chief, joined the employees and union leaders, and said he backs their efforts.

"You are the face of Boston," he told the employees. "And that is something we're all proud of."