New fashions to enterprises shorten labor working period after two days off weekly highly announced by government lately. This paper focuses the general influence analysis upon the working 44 hours a week, the cost of firms throughout a nationwide will be 140 billion yearly, whole year overtime job fee add 1.6 billion too. Even though decrease to 40 working hours, enterprises should lessen job salary or overtime fee respectively. Viewing employees have more leisure period, if they improve lots of work productivity, strategy will be achieved and enterprises loss covered as well.