Section 19. Election by certain villages, school districts, special districts and public agencies located in two or more counties

The  administration  of this chapter in a village, school district or special
  district incorporated or established on or after the effective  date  of
  this  act  and  comprising  territory  in  two or more counties, or in a
  public agency established  on  or  after  the  effective  date  of  this
  amendment  and maintained jointly by two or more counties or two or more
  municipal  corporations  or  other  civil  divisions,  including  school
  districts,   situated   in   different  counties,  shall  be  under  the
  jurisdiction of the civil service commission or personnel officer having
  jurisdiction over  the  classified  service  of  one  of  such  counties
  selected  by  action  of  the  governing  board or body of such village,
  school district or special district, or the appointing authority of such
  public agency.  In the event that such board or body  of  such  a  newly
  incorporated  village  or  newly  established school district or special
  district or the appointing authority of such  newly  established  public
  agency  fails  to  make  such  selection  within  ninety  days after the
  effective date of such incorporation  or  establishment,  such  village,
  school  district,  special district or public agency shall be subject to
  the jurisdiction of the civil service commission  or  personnel  officer
  having  jurisdiction  over the classified service of the county in which
  the greater  or  greatest  territorial  area  of  such  village,  school
  district, special district or public agency is located.