in country group polarised female labour market behaviour where mothers work either fulltime or not at all the probability of working full rather than parttime increases only when the youngest child is aged between and years old and in countries where mothers often work parttime women in longterm parttime work country group the probability of working fulltime increases only when the youngest child is to years old as is also the case in countries with a relatively narrow gender gap in working hours eg france and the nordics country group in eastern european countries country group the number of children in a household does not appear to have a significant impact on the likelihood of an employed mother working full rather than parttime