I think this should answer the question. https://www.dir.ca.gov/dlse/Overtime-for-Agricultural-Workers-FAQ.html
What is the timetable for agricultural workers to receive overtime pay after January 1, 2019?
The daily and weekly thresholds at which agricultural workers receive overtime pay at a rate of one and one-half times the employee’s regular rate of pay will phase-in according to the following schedule:
| Schedule for Changes to Daily and Weekly Hours After Which Agricultural Workers Receive Overtime Pay | ||
|---|---|---|
| Effective date for employers with 26 or more employees: | Effective date for employers with 25 or fewer employees | Overtime (1.5x regular rate of pay) required after the following hours per day / hours per workweek: |
| Jan. 1, 2019 | Jan. 1, 2022 | 9.5 / 55 |
| Jan. 1, 2020 | Jan. 1, 2023 | 9 / 50 |
| Jan. 1, 2021 | Jan. 1, 2024 | 8.5 / 45 |
| Jan. 1, 2022* | Jan. 1, 2025* | 8 / 40 |
*Double the regular rate of pay required after 12 hours in a workday.
For pre-existing overtime requirements for agricultural workers, including on the 7th day of work in a workweek, please see Wage Order 14.