Final answer:
The responsibility of de-registering an Emergency Action Plan (EAP) personnel typically lies with the employer or supervisor, and is necessary for maintaining compliance with workplace safety regulations.
Step-by-step explanation:
The question of who should de-register an Emergency Action Plan (EAP) personnel falls under the subject of law, specifically in the realm of workplace safety and compliance regulations. De-registration usually must occur by an employer or a supervisor who oversees the EAP. This process generally involves removing the individual's official status as a designated emergency responder within an organization. It can be required due to various reasons such as the individual's change in job role, leaving the company, or lack of necessary qualifications to continue serving in that capacity.
It is important for employers to stay compliant with regulations and ensure a proper process for de-registration is followed, to maintain workplace safety and legal compliance.