This paper discusses and proposes that many basic ideas and rational principle and management methods of human resources sciences can be applied to the legislation of labor contract law,the enterprise should not be punished by double wages when the enterprise and laborer form actual labor relation and has signed labor contract for reducing the hire labor of cost;the rationality and legitimacy of changes in the labor contract should consider predictability of the change,competence of the staff positions,actual business necessity,and relevance of the new positions with the original.Construction enterprises regulations should consider legal procedures,Legal content,reasonable standards,operational terms and full publicity notice.