wildcat strike

wildcat strike Word Origin noun

1. a labor strike that has not been called or sanctioned by the officials of the union.

Origin of wildcat strike An Americanism dating back to 1940–45 Also called outlaw strike, quickie strike. British Dictionary definitions for quickie strike wildcat strike noun

1. a strike begun by workers spontaneously or without union approval

quickie strike in Culture wildcat strike

A strike called in violation of an existing contract between labor and management.