Women in management in Japan

Women have had a hard time getting to positions of "authority" at the workplace in Japan. They could sometimes find themselves demoted into a clerical job after pregnancy. However, through the Equal Employment Opportunity Act passed in 1985, Japan hoped to get rid of this trend. Regardless of the effort, the employment of women in management positions only increased by 4% in 20 years. Is this a discriminatory issue or is it a decision made by the majority of Japanese women?

http://www.nytimes.com/2007/08/06/world/asia/06equal.html