It is illegal to discriminate against an individual because of birthplace, ancestry, culture, or linguistic characteristics common to a specific ethnic group.
A rule requiring that employees speak only English on the job may violate Title VII unless an employer shows that the requirement is necessary for conducting business. If the employer believes such a rule is necessary, employees must be informed when English is required and the consequences for violating the rule.
The Immigration Reform and Control Act (IRCA) of 1986 requires employers to assure that employees hired are legally authorized to work in the U.S. However, an employer who requests employment verification only for individuals of a particular national origin, or individuals who appear to be or sound foreign, may violate both Title VII and IRCA; verification must be obtained from all applicants and employees. Employers who impose citizenship requirements or give preferences to U.S. citizens in hiring or employment opportunities also may violate IRCA.