High noise levels can negatively impact which aspect of an employee’s performance?

High noise levels can significantly impair an employee's concentration, leading to distractions that make it challenging to focus on tasks at hand. When the environment is noisy, it creates a sensory overload that can hinder an individual's ability to maintain attention, process information, and think critically. This distraction can result in decreased work quality and increased errors, affecting overall performance.

While high noise levels can also impact collaboration and proactivity, the core issue lies in concentration. Effective concentration is crucial for both productive individual work and engaging in collaborative efforts. Therefore, while some may argue the effects extend to other areas, the direct impact on concentration makes it the most immediately relevant aspect when discussing high noise levels in the workplace.