The study shows that in the past 20 years, women, especially married women, have significantly increased their earnings and participation in the workforce. Meanwhile, men's earnings have only slightly gone up, leading to a less equal distribution of family income. The research highlights that the rise in working wives' efforts and earnings has played a major role in boosting family income levels. Essentially, the increased work of wives has become the main factor in improving the standard of living for families across all income levels.