(1)After a policy has been in effect for more than 60 days, or if the policy is a renewal, effective immediately upon renewal, no increase in the rate upon which the premium is based, reduction in limits, or change in the conditions of coverage shall be effective during the policy period unless a written notice is mailed or delivered to the named insured and the producer of record at the mailing address shown on the policy, at least 30 days prior to the effective date of the increase, reduction, or change. The time periods and procedures in subdivision (a) of Section 1013 of the Code of Civil Procedure shall be applicable if the notice is mailed. The notice shall state the effective date of, and the reasons for, the increase, reduction, or change.