California cannabis regulations are written by the Department of Cannabis Control (DCC) and follow the state's Administrative Procedure Act. A rulemaking starts with a public notice, published with the proposed text and a statement of reasons.
The notice opens a public comment period, normally at least 45 days, and the DCC may hold a public hearing. If the text changes after comments, the DCC usually publishes the revised version for a shorter additional comment period.
When the DCC finishes, it submits the rulemaking file to the Office of Administrative Law (OAL), which reviews it before the rule can take effect. Emergency regulations follow a faster path and can take effect before the regular process is complete.
For a compliance team, the dates that matter are the comment deadline, the OAL decision and the effective date. Missing any of them can mean commenting too late or changing operations too late.