Long-time work have negative effect on work-family balance and the quality of worker`s life. The rest will be needed in the point of employee`s life-cycle, primarily in child and family care. This study examines the ways for realizing work-family balance and propose the improvement focused on measures Switching Part-Time Work system on Equal Employment and Work-Faimily Balance Assistance Act(EWBA). In EWBA, If an employee applies for a reduced number of work hours in lieu of full day of childcare leave, the employer should allow the employee to work shorter workdays. Similarly, EWBA provide for switching part-time work system for family care. In spite of these provisions, they are actually vastly underutilized as of yet, and there is no methods for to guarantee on effectiveness that. Flexibility for part-time work should be ensured for balancing work-family. To make better use of the system, it should be changed when full-time worker request employer to transpose into a part-time worker, legal obligation for employer should be established for consultation and agreement. Moreover, It should be extended the boundaries of claim for part-time work in full-time employee to family care. Last but not least, the right of defense for the employee`s claim, to great barrier for his/her business, is not clear to the scope, so It should restrict the urgent necessity in relation to the business.