Women are overrepresented in the public and nonprofit sectors. This article aims to bring to light the reasons behind this phenomenon. The originality of the employer-employee matched data used allows us to consider a large scope of potential reasons. Using a non-linear decomposition technique (Fairlie, 2005), we find that in addition to the well-known occupational segregation effect, the overrepresentation of women in the public and nonprofit sectors is associated with two common factors: greater offerings of family-friendly practices and higher attraction of men for certain fringe benefits that are more frequently provided by the for-profit sector. Sector-specific factors also exist. The higher wage advantage obtained by women compared with men working in the public sector rather than in the for-profit sector contributes to the feminization of the public sector. Similarly, the overrepresentation of women in the nonprofit sector is linked to greater access to part-time jobs and shorter workweeks there.