Because there are fewer minority workers, it is more cost effective for employers to figure out how to mentor majority workers than it is for minority workers

Minority workers need more mentoring than majority workers, so it costs more for firms

Mentoring minority workers costs more than mentoring majority workers because they require special mentors and more mentoring time

Minority workers are less likely to apply for or accept jobs at organizations without mentoring, so it is an additional cost for hiring minority workers