Which law forbade older workers from being limited in any way that would harm their employment possibilities?

The Age Discrimination in Employment Act (ADEA) of 1967 is the law that forbids discrimination against workers aged 40 and older in employment decisions. It protects older employees from being limited in ways that could harm their job opportunities, promotions, or benefits based on age. The ADEA applies to employers with 20 or more employees and covers various aspects of employment, including hiring, firing, and compensation.