for employed mothers with a high level of educational attainment this is a difference of just under percentage points being unmarried also significantly increases the likelihood of an employed mother working fulltime although the size of the association here is only small on average holding all else constant the probability of working fulltime rather than parttime is only about percentage points higher for unmarried mothers than for married mothers age has less of an effect there is no significant difference in the probability of fulltime employment across age groups at least after controlling for other factors