The provisions of the civil service rules apply to all employees and employers under the jurisdiction of chapter 41.06 RCW except those positions or employees exempted under the provisions of WAC 357-04-015, 357-04-020, 357-04-035, 357-04-040, 357-04-045, 357-04-050 and 357-04-055. Employee business unit members as defined in WAC 357-43-001 are only covered by chapter 357-43 WAC of the civil service rules.