Haw. Rev. Stat. § 88D-2: Special pay plan; authority established; participation.

(a) Each jurisdiction may establish a special pay plan for its employees.

(b) Eligibility and participation in a special pay plan shall be determined by each jurisdiction; provided that the plan shall be:

(1) In accordance with chapter 89, for employees subject to a collective bargaining agreement; and

(2) Mandatory for employees not subject to a collective bargaining agreement employed in a jurisdiction that has elected to establish a special pay plan.