mass action theoryglossary / MASS-ACTION THEORY mass-action theory. The principle that, as long as a labor union is functioning, it is vicariously liable for the joint acts of its members. 词条贡献者 法律翻译Gianluca,毕业于英国一流的高级翻译学院,专注翻译各类与环境、土地及资源有关的法律文件。