Age
Age Discrimination in Employment Act of 1967 - ADEA - 29 U.S. Code Chapter 14
The ADEA prohibits employment discrimination nationwide based on age with respect to employees 40 years of age or older. The ADEA also addresses the difficulty older workers face in obtaining new employment after being displaced from their jobs, arbitrary age limits.
US Constitution - 5th and 14th Amendments
The Fifth and Fourteenth Amendments of the United States Constitution limit the power of the federal and state governments to discriminate. The private sector is not directly constrained by the Constitution.