Final answer:
The federal law that prohibits discrimination against an employee based on a disability is the Americans with Disabilities Act (ADA). The ADA requires employers to provide reasonable accommodations to qualified individuals with disabilities.
Step-by-step explanation:
The federal law that makes it illegal to discriminate against an employee based on a disability is the Americans with Disabilities Act (ADA). Titles I and V of the ADA state that no covered entity can discriminate against a qualified individual on the basis of disability in regard to job application procedures, hiring, advancement, discharge of employees, employee compensation, job training, and other terms, conditions, and privileges of employment. The ADA requires employers to make reasonable accommodations to the known physical or mental limitations of an otherwise qualified individual with a disability, unless it would impose an undue hardship on the business.