A director of investigations works with internal investigations at a company or institution, such as a law enforcement department or law firm. Your duties and responsibilities depend on the type of investigations you are hired to perform. For example, some directors oversee accounting or regulatory compliance, while others may supervise investigations into workplace violence, sexual harassment, discrimination, or a similar complaint. At a large multinational corporation, you may be an investigator for a region or may be hired as the director of global investigations.