; (bb) the deterrent goals of any law underlying a workplace claim would be served; or (cc) such extension would otherwise further the interests of justice. (iv) Definitions In this paragraph: (I) Material witness The term material witness means an individual who presents a declaration from an attorney investigating, prosecuting, or defending a workplace claim or the presiding officer overseeing the workplace claim that attests that, to the best of the knowledge and belief of the declarant, reasonable cause exists to believe that the testimony of the individual will be relevant to the outcome of the workplace claim. (II) Workplace claim The term workplace claim means any written or oral claim, charge, complaint, or grievance relating to the violation of applicable Federal, State, or local labor laws (including laws relating to wages and hours, labor relations, family and medical leave, occupational health and safety, civil rights, and nondiscrimination) that is filed with or communicated or submitted to— (aa) an employer; (bb) a Federal, State, or local— (AA) agency; or (BB) court; or (cc) an employee representative. .