United States labor law
Since the Civil Rights Act of 1964, all employing entities and labor unions have a duty to treat employees equally, without discrimination based on "race, color, religion, sex, or national origin." There are separate rules for sex discrimination in pay under the Equal Pay Act of 1963. Additional groups with "protected status" were added by the Age Discrimination in Employment Act of 1967 and the Americans with Disabilities Act of 1990. There is no federal law banning all sexual orientation or identity discrimination, but 22 states had passed laws by 2016. These equality laws generally prevent discrimination in hiring, terms of employment, and make discharge because of a protected characteristic unlawful. There is no federal law against unjust discharge, and most states also have no law with full protection against wrongful termination of employment. Collective agreements made by labor unions and some individual contracts require people are only discharged for a "just cause". The Worker Adjustment and Retraining Notification Act of 1988 requires employing entities give 60 days notice if more than 50 or one third of the workforce may lose their jobs. Federal law has aimed to reach full employment through monetary policy and spending on infrastructure. Trade policy has attempted to put labor rights in international agreements, to ensure open markets in a global economy do not undermine fair and full employment.
Ageism
Age discrimination in hiring has been shown to exist in the United States. The Equal Employment Opportunity Commission's first complainants were female flight attendants complaining of (among other things) age discrimination. In 1968, the EEOC declared age restrictions on flight attendants’ employment to be illegal sex discrimination under Title VII of the Civil Rights Act of 1964. However, Joanna Lahey, professor at The Bush School of Government and Public Service at Texas A&M, found recently that firms are more than 40% more likely to interview a young adult job applicant than an older job applicant. All states in the US prohibit youth under 14 from working with a handful of exceptions, and prohibit youth under 18 from working in hazardous occupations. They are also paid a lower minimum wage and not allowed to work full-time.