California’s New Definition of “Sex” Starts January 1, 2027. Much of It Already Applies.
Your manager keeps saying you would fit in better if you dressed, spoke, or acted the way people expect someone like you to. It wears on you, and you are not sure whether it is just a bad boss or something more.
You may also have read that a new California law on this subject takes effect January 1, 2027, and assumed nothing applies until then. That assumption can cost you time you do not have.
A pattern with a name
Comments like these follow a pattern that employment law has recognized for years. The question is usually how often they happen, who makes them, and what follows.
What the new law says
California already prohibits sex discrimination under the Fair Employment and Housing Act (FEHA), Gov’t Code § 12940(a). Assembly Bill 2563 (Stats. 2026, ch. 952), signed September 30, 2026, and operative January 1, 2027, adds a list to Gov’t Code § 27 describing what “sex” includes, and Gov’t Code § 12926(r) points FEHA’s definition of sex to that list.
The list includes assigned sex or gender category, the degree of conformity to sex or gender stereotypes, gender identity and gender expression, pregnancy and related medical conditions, decision-making about or use of pregnancy-related drugs, devices, products, or services, sexual orientation, and variations in sex characteristics, including intersex traits. The bill states that it reflects protections that already exist under the California Constitution and directs courts to construe it liberally, with any greater protection elsewhere in the law prevailing.
What has not changed yet
Much of that list was already part of FEHA before this bill, which is why waiting for January may be a mistake. California keeps moving toward broader protection.
Not every comment is unlawful, though. A single remark, or a manager who is rude to everyone, may not meet the legal standard (yet), and whether conduct crosses the line still depends on what the person said, how often, and what the employer did once it knew.
Keep track of dates, words, and witnesses. Those details usually decide the outcome.
If someone at work has treated you differently for not matching an idea of how a man or woman should look or act, the protection may already reach you, and deadlines for acting can run regardless of when a new law begins.
Contact Michael Trust Law, APC for a no-charge initial consultation. The facts determine whether you have a claim - and how much of a conversation that takes.
This post shares general information based on common patterns I see in California workplaces. It is not legal advice, does not create an attorney-client relationship, and outcomes depend on specific facts - no lawyer can guarantee a result. Past results do not guarantee or predict future outcomes. AI may have been used to create this post. All content reviewed by a CA attorney before publication.