Research shows, conversely, a “dad bonus;” fathers’ pay tends to increase after they have children. This latter phenomenon may be due to employers perceiving fathers as committed and stable men. Mothers, on the other hand, are more likely to be perceived as distracted and less committed to their work. Longitudinal research in the United States shows that this bias is most costly to low-resource parents. While low-income women suffer from the greatest pay cuts after having children, men who have high incomes receive the biggest pay increases after having children.