seniority systemglossary / SENIORITY SYSTEM seniority system. Employment law. Any arrangement that recognizes length of service in making decisions about job layoffs and promotions or other advancements. 词条贡献者 法律翻译Gwen,毕业于新加坡知名法学院,专注翻译各类与劳工、雇佣及移民有关的法律文件。