Although women constitute a large and growing proportion of the American labor force, and their employment plays a vital role in their economy, they earn substantially less than men and typically work in a small number of occupations that predominantly employ women. Since Equal Pay Act of 1963 and Title VII of the Civil Rights Act of 1964 have endured as the main policy for combating employment discrimination, sex discrimination in employment still has been wide-spread. The purposes of this study are to review evidences showing that sex segregation in employment has significant consequences for women particularly, and to investigate the status of working women by examining different organizational background and different occupational position. Results of this study provide us a fuller understanding of sex segregation by different organizations and also offer EEOC to better target its efforts and resources in the future.