London, England (CNN) — British Airways on Wednesday criticized attempts by the union representing the airline’s cabin crews to internationalize their planned strike among sympathetic labor organizations around the world.

Members of the Unite union have voted to strike for three days from Saturday and then for four more days from March 27, causing disruption to BA schedules, but the airline has said it hopes to operate 60 percent of long-haul services.

The industrial action is over planned changes to cabin crew conditions, which BA says will save the carrier more than £60 million (more than $90 million) a year. Unite says the plans call for working hours to be extended and crew levels to be cut, changes it says will damage customer service and the BA brand. [Read More]