A Coordinated Refusal to Work Is Usually Called a "Strike," Even on Mount Everest

I'm just trying to help out National Public Radio. In their top of the hour news segment on Morning Edition (no link) they referred to the possibility that the Sherpas who place the ropes and assist climbers may collectively decide not to work to demand more compensation for the families of the Sherpas who died last week in an avalanche. The NYT correctly described this action as a possible strike, but NPR called it a "boycott."