Here's what rhymes with underemployment.

Consider these alternatives

unemployment / employment underemployed / employed nutation / operation unemployed / employed astoundingly / resoundingly underdevelopment / development grunt / and genteelly / freely rate / great recidivism / given absenteeism / deism malnutrition / position disproportionately / proportionately deflation / relation patronizingly / surprisingly sedimentation / operation unceasingly / increasingly inequality / quality