2005 California Health and Safety Code Sections 40120-40126 Article 2. Officers and Employees

40120.  All county officers and employees shall be ex officio
officers and employees, respectively, of the county district in the
county by which they are employed.
   Except as otherwise provided in this division, they shall perform,
without additional compensation, for the county district such duties
as they perform for the county.
40121.  In fixing compensation to be paid to a person subject to the
civil service provisions of this article, the county district board
shall provide a salary or wage equal to the salary or wage paid to a
county employee for the same quality of service.
   This section shall be operative only in a county which is
operating under a freeholders' charter which requires that, in the
fixing of salaries or wages for persons employed by the county
subject to the civil service system of the county, the board of
supervisors shall provide a salary or wage at least equal to the
prevailing salary or wage for the same quality of service rendered by
private persons under similar employment in case such prevailing
salary or wage can be ascertained.
40122.  All officers and employees of a county district are entitled
to the benefits of the County Employees Retirement Law of 1937
(Chapter 3 (commencing with Section 31450), Part 3, Division 4, Title
3 of the Government Code) to the same extent as employees of the
county.
   A county district is a district as defined in Section 31468 of the
Government Code.
40123.  If any person is employed by a county district after
certification without examination by the civil service commission or
similar body because of his employment in a position of similar
duties by the county or by a city within the county district, the
time such person was employed in such county or city position shall
be considered as time such person was employed by the county district
in determining his retirement benefits and salary.
40124.  In any county having a system of civil service, the county
district board shall, nevertheless, appoint the members of the county
district hearing board and the air pollution control officer, and
the air pollution control officer shall appoint all other officers
and employees of the county district pursuant to that system, except
as provided in Section 40126.
40125.  Any person entitled to participate in promotional
examinations for positions in the county classified civil service
shall similarly be entitled to participate in promotional
examinations for positions in the classified civil service of the
county district, pursuant to the county civil service commission
rules in effect at the time, and to be certified for such county
positions by the county civil service commission, or other body
performing the functions thereof, and to be appointed to such county
district positions.
40126.  If the civil service commission, or body performing the
functions thereof, in the county finds that any person has been
employed by the county, or by any city within a county district, in a
position the duties of which, and the qualifications for which, are
substantially the same as, or are greater than and include
qualifications which are substantially the same as, those of any
position in the county district, the civil service commission or such
other body, at the request of the air pollution control officer, may
certify, without examination, such person as eligible to hold such
county district position.