California employers received an important court ruling on October 29, 2026, when the Ninth Circuit affirmed a preliminary injunction blocking enforcement of Senate Bill 399. The statute would prohibit employers from taking adverse action against employees who decline to attend meetings or receive communications expressing the employer’s views on political or religious matters. Those political matters include subjects connected to labor organizations.
The ruling is meaningful, but it is not the same as a final decision striking down the law. The Ninth Circuit concluded that the business groups challenging the statute were likely to prevail on their First Amendment claim. The court viewed the law as content- and speaker-based because it applied when an employer communicated particular kinds of opinions. That conclusion was sufficient to uphold the injunction. The court did not decide whether federal labor law also preempts the statute, and the litigation may continue through additional review or a decision on the merits.
For now, California cannot enforce SB 399 against employers. The injunction also removes the immediate concern over the law’s civil penalty and its private-action exposure. That is useful breathing room for employers that communicate with employees about legislation, public policy, union activity, or workplace values. Still, breathing room is not a hall pass. Employers should not read the injunction as permission to make attendance mandatory, discipline employees for declining a meeting, or use meetings in a way that could be viewed as coercive or retaliatory.
The practical risk often turns on how a meeting is described and administered. An event labeled all-hands, required, or mandatory can create the expectation that employees will face consequences for nonattendance. In the court’s opinion, that expectation was central to the dispute. HR teams should therefore review the language used in invitations, supervisor scripts, attendance tracking, and post-meeting follow-up. If a communication is genuinely optional, say so clearly. If employees may decline or leave without penalty, make that point just as clear.
Employers should also separate legally required or job-related communications from advocacy. Training that employees need to perform their jobs, communicate safety expectations, or satisfy legal duties may raise different considerations than a meeting about an election, ballot measure, organizing campaign, or a company position on public policy. The distinction can be nuanced, particularly during union activity, so labor counsel should review high-risk communications before they are delivered.
The best compliance response is to mark SB 399 as enjoined in California legal trackers, rather than deleting it. Preserve voluntary-attendance language and manager guidance that may become important if the injunction changes. Review mandatory-meeting practices under the National Labor Relations Act, anti-retaliation laws, and internal employee-relations standards.
The bottom line is simple: the California enforcement threat is on pause, not erased. Employers should use the pause to make their communication practices clearer, less coercive, and easier to defend. Good manager communication rarely suffers from being more transparent about what is required and what is optional. Documenting the business purpose and attendance status of sensitive meetings is a sensible, low-cost precaution.
Lisa Smith, SPHR, SCP
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