California Code, Insurance Code - INS § 12689

A notification of the conversion coverage shall be included in each certificate of coverage or other legally required document explaining coverage;  provided, however, that it shall be the sole responsibility of the policyholder to notify its employees or members of the availability, terms and conditions of conversion coverage which responsibility shall be satisfied by notification within 15 days of termination of group coverage.  Group coverage shall not be deemed terminated until the expiration of any continuation of the group coverage.  For purposes of this part, the policyholder shall not be deemed to be the agent of the insurer for purposes of notification of the availability, terms and conditions of conversion coverage.