California State Legislature

The California State Legislature is the bicameral legislature of the State of California, comprising the 80-member State Assembly and the 40-member Senate. As the legislature of the world's fifth-largest economy, its enactments routinely become de facto national standards: the California effect, whereby compliance costs push multi-state businesses to adopt California rules uniformly, operates in technology, environment, and labour markets alike. In 2026 the Legislature has become the primary US venue for AI employment regulation, with SB 951 (90-day AI layoff notice), SB 947 (AI worker protections), and related measures advancing simultaneously through the Assembly after Senate passage.

The Legislature meets in Sacramento and operates on a two-year session cycle. Bills originating in one chamber must pass the other in the same two-year session or lapse. The Assembly is the lower chamber; the Senate sits as the upper. Both chambers are controlled by Democratic supermajorities as of 2026, meaning the primary brake on AI labour bills is the governor's veto pen and legal challenges from the Trump administration rather than internal legislative opposition. The governor cannot be compelled to sign any bill, and Governor Newsom has previously vetoed AI regulation bills (including a 2024 AI safety bill) on industry-impact grounds, making the final stage of any AI employment bill uncertain.

California's legislature holds disproportionate influence in US labour law because of its size, Democratic alignment, and willingness to act ahead of federal inaction. The WARN Act extension model it is piloting with SB 951, and the worker-protections framework of SB 947, are being watched by legislators in New York, Illinois, and Washington State. Simultaneously, the Trump administration's National Policy Framework explicitly targets state AI labour laws for federal preemption, placing California's 2026 legislative agenda at the centre of a constitutional conflict over who governs AI and employment in the United States.