Haw. Rev. Stat. § 128D-15
No person shall terminate from employment or in any other way discriminate against, or cause to be eliminated from employment or discriminated against, any person on the grounds that the person has provided information to the State, filed, instituted, or caused to be filed or instituted any proceeding under this chapter, or has testified or is about to testify in any proceeding resulting from the administration or enforcement of this chapter, or has refused to act because of the good faith belief that one would be acting in violation of this chapter. No criminal penalty shall be imposed under this chapter upon any person for action taken in the course and scope of the person's employment if the person does not possess managerial or supervisory authority.
HRS § 128D-15