The labor force is often organized as if workers had no family responsibilities. Preschool-age children need full-time care; children in primary school need care after school and during school vacations. Although day-care services can resolve some scheduling conflicts between home and office, workers cannot always find or afford suitable care. Even when they obtain such care, parents must still cope with emergencies, such as illnesses, that keep children at home. Moreover, children need more than tending; they also need meaningful time with their parents. Conventional full-time workdays, especially when combined with unavoidable household duties, are too inflexible for parents with primary child-care responsibility. Although a small but increasing number of working men are single parents, those barriers against successful participation in the labor market that are related to primary child-care responsibilities mainly disadvantage women. Even in families where both parents work, cultural pressures are traditionally much greater on mothers than on fathers to bear the primary child-rearing responsibilities. In reconciling child-rearing responsibilities with participation in the labor market, many working mothers are forced to make compromises. For example, approximately one-third of all working mothers are employed only part-time, even though part-time jobs are dramatically underpaid and often less desirable in comparison to full-time employment. Even though part-time work is usually available only in occupations offering minimal employee responsibility and little opportunity for advancement or self-enrichment, such employment does allow many women the time and flexibility to fulfill their family duties, but only at the expense of the advantages associated with full-time employment. Moreover, even mothers with full-time employment must compromise opportunities in order to adjust to barriers against parents in the labor market. Many choose jobs entailing little challenge or responsibility or those offering flexible scheduling, often available only in poorly paid positions, while other working mothers, although willing and able to assume as much responsibility as people without children, find that their need to spend regular and predictable time with their children inevitably causes them to lose career opportunities to those without such demands. Thus, women in education are more likely to become teachers than school administrators, whose more conventional full-time work schedules do not correspond to the schedules of school-age children, while female lawyers are more likely to practice law in trusts and estates, where they can control their work schedules, than in litigation, where they cannot. Nonprofessional women are concentrated in secretarial work and department store sales, where their absences can be covered easily by substitutes and where they can enter and leave the work force with little loss, since the jobs offer so little personal gain. Indeed, as long as the labor market remains hostile to parents, and family roles continue to be allocated on the basis of gender, women will be seriously disadvantaged in that labor market.