What term describes a person assigned or approved by the employer to perform a specific task?

The term that best describes a person assigned or approved by the employer to perform a specific task is "Authorized Person." This designation indicates that the individual has received permission or approval from the employer to execute particular duties or responsibilities, which may involve specialized knowledge or skills relevant to the task at hand.

In a construction or building context, an authorized person may be essential for ensuring that specific regulations, safety protocols, or operational standards are followed during project execution. This concept is crucial in maintaining compliance with workplace safety regulations and ensuring that those assigned to specific roles are qualified to perform their designated tasks effectively.