11022.
Each state agency shall establish a procedure pursuant to which incoming telephone calls on any public line shall be answered within 10 rings during regular business hours as set forth in Section 11020, except where emergency or illness require adjustments to normal staffing levels. This requirement shall be met in every office where staff is available, unless compliance would require overtime or compensating time off. This procedure also shall enable a caller to leave a message, either person-to-person, or via voice mail or other method of 24-hour telecommunications. Each call shall be returned within three business days or 72 hours after the message is left, whichever is earlier.