Research documents a wage penalty for mothers compared to childless women. We demonstrate there is also an occupational status penalty to motherhood. Interrogating supply- and demand-side explanations of the motherhood penalty from the life course perspective, we formulate and test original hypotheses about the short-term and long-run career implications of parity-specific births. We analyze longitudinal data from the European Community and Household Panel for 13 European countries and eight time points between 1994 and 2001. Our fixed-effects models show that status losses for a first birth are not just short-term but accumulate over the career. The timing of a birth in a woman’s life course matters only for older women, who experience a significant penalty to third births. Although the personal strategies that women use to minimize the career costs of motherhood (e.g., having only one child) prove ineffective, our cross-national evidence shows that public policies are linked to the motherhood penalty in occupational status.