Anything nondiscriminatory is fair and unbiased. Nondiscriminatory policies don't give preference to people from specific ethnic, racial, or economic groups.
Nondiscriminatory means "not discriminating," from the Latin discriminatus, "to divide or separate." When you discriminate, you notice the differences between people and treat them unequally because of those differences. So anything nondiscriminatory actively resists allowing that to happen, like hiring policies that don't allow employers to show bias against people because of their age or religion.