What were your parents’ taxable earnings from need-based employment programs?
This is question 91c on the paper Free Application for Federal Student Aid (FAFSA?) form.
Federal Work-Study is income earned from work. This income should appear on your parents’ W-2 form and should be reported as wages, whether or not your parent is a tax filer. Don’t worry that you’re reporting work-study income in both places. The amounts from the “Parents’ Additional Financial Information” fields are treated differently in the Estimated Family Contribution calculation, and your parents won’t be penalized.
Round to the nearest dollar. Don’t include commas or decimal points.