UI is paid by the employer. Tax-rated employers pay a percentage on the first $7,000 in wages paid to each employee in a calendar year. The UI rate schedule and amount of taxable wages are determined annually. New employers pay 3.4 percent (.034) for a period of two to three years. We notify employers of their new rate each December. The maximum tax is $434 per employee per year (calculated at the highest UI tax rate of 6.2 percent x $7,000.)
https://edd.ca.gov/en/payroll_taxes/what_are_state_payroll_taxes/#:~:text=Unemployment%20Insurance%20(UI)%20Tax&text=Tax%2Drated%20employers%20pay%20a,of%20two%20to%20three%20years.