It does not apply to federal agencies, some law enforcement agencies, and certain other entities. File an Employment Discrimination Complaint.Use of a guide or service animals for a disability. Retaliation is also illegal, and the law protects you if you stand up against discrimination. Pennsylvania Disability Discrimination Laws. "What can a person do if his employer denies a requested accommodation? Disability Discrimination in the workplace is illegal under the Americans with Disabilities Act (ADA) and the Pennsylvania Human Relations Act (PHRA). Mental health discrimination in the workplace is unethical and illegal, and workers with mental illnesses have protection under the law. This section of PALawHelp. Fill Out Our Intake Form.