The U.S. Department of Labor, EEOC and OFCCP have many good references on their websites.
Office of Federal Contracts Compliance Programs (OFCCP) official website
https://www.dol.gov/ofccp/
FAQ – Frequently Asked Questions – for Employers
http://kb.dol.gov/DOLFAQLandingPage?agency=OFCCP&parentCatValue=Employer
EO 11246 – Affirmative Action requirements for females and minorities
https://www.dol.gov/ofccp/regs/compliance/ca_11246.htm
Section 503 of the Rehabilitation Act – for individuals with disabilities and disabled veterans
https://www.dol.gov/ofccp/regs/compliance/section503.htm
VEVRAA The Vietnam Era Veterans’ Readjustment Assistance Act – For qualified veterans
https://www.dol.gov/ofccp/regs/compliance/vevraa.htm
EEO-1 Survey Report
https://www.eeoc.gov/employers/eeo1survey/
VETS 4212
https://www.dol.gov/vets/vets4212.htm