in country groups and the characteristics of the partner share little or no association with the probability of an employed mother working fulltime in country group there is a negative significant association between an employed mother having a highearning partner and the likelihood of the mother working parttime but the marginal effect is only small employed mothers with a highearning partner are only about percentage points less likely to work fulltime than otherwise similar mothers with a lowearning partner otherwise the partner s characteristics appear to have no effect on the probability of fulltime work