California Code, Insurance Code - INS § 10855

(a) Provide advance notice of its decision to the board.

(b) Provide notice of the decision at least 180 days prior to the nonrenewal of any health benefit plan or ancillary benefit plan to employers or small employers and enrollees.

A participating carrier that elects not to renew a health benefit plan with a purchasing alliance shall be prohibited from writing new business through the purchasing alliance for a period of three years from the date of the notice to the purchasing alliance or until the purchasing alliance, with the concurrence of the commissioner, invites the former participating carrier to renew participation, whichever is sooner.