Section 503 of the Rehabilitation Act of 1973 prohibits employment discrimination against applicants and employees because of physical or mental disabilities and requires federal contractors and subcontractors with federal contracts or subcontracts in excess of $15,000 to take affirmative action to ensure that persons are treated without regard to disability. As part of their affirmative action efforts, contractors are required to invite applicants, new hires, and employees to voluntarily self-identify their disability status using Form CC-305.

Form CC-305 has long been the subject of criticism from contractors, as well as from their applicants