Please complete the Discrimination Complaint Form and attach any documentation you may have pertaining to the issues you have expressed. Mail Fill out and send the paper ADA Complaint Form.If you need assistance completing this form, contact the ADA Coordinator. An Act To establish a clear and comprehensive prohibition of discrimination on the basis of disability. Section 504 of the Rehabilitation Act of 1973. Section 504 prohibits discrimination based on disability. Discrimination on the basis of disability: means to: Limit, segregate, or classify a citi zen in a way that may adversely affect opportu. Pursuant to the ADA, employers with 15 or more employees may not discriminate against "qualified individuals" because of a disability. Section 504 is a part of the Rehabilitation Act of 1973 that prohibits discrimination based upon disability. We cannot forward your complaint to the PHRC.