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 译者David,毕业于亚洲顶尖的高级翻译学院,擅长翻译各种与复杂商业诉讼相关的法律文件。