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Workplace Language Restrictions in California
An English-only rule is lawful only when it meets a statutory test. Convenience is not that test.
General education for California employees—not legal advice. Your facts and deadlines control. This is not a Workplace Rights Advocacy case result. It explains the Civil Rights Department workplace notice in plain English. It is not the poster and it is not a complete statement of every exception.
The two conditions
Government Code § 12951 makes it an unlawful employment practice for a covered employer to adopt or enforce a policy that limits or prohibits any language in the workplace unless both of these are true: the restriction is justified by business necessity, and the employer has told employees when the restriction applies and the consequences of violating it.
Business necessity means an overriding legitimate purpose. The restriction must be necessary to the safe and efficient operation of the business, it must actually serve that purpose, and there must be no alternative that would accomplish the purpose equally well with less discriminatory impact.
What the regulation adds
Title 2, California Code of Regulations, section 11028 requires the restriction to be narrowly tailored and effectively communicated. Customer or coworker preference, and mere convenience, are not enough. English-only rules are never lawful on breaks, lunch, or other non-work time.
The common fact pattern—fired for speaking Spanish, or because a worker cannot speak English—is explained in terminated for speaking Spanish or because you cannot speak English. English-proficiency rules and accent rules are different from an English-only policy, and that article separates them.
Related: Fired for Speaking Spanish or Not Speaking English · National Origin Discrimination · Workplace Rights Notice