What is considered an important nonproductive help for managing overhead costs?

Supervisory assistance is considered an important nonproductive help for managing overhead costs because it directly impacts the efficiency and effectiveness of the workforce. Supervisors play a crucial role in ensuring that tasks are completed correctly and safely, which can prevent costly mistakes and accidents that may lead to increased overhead. By overseeing operations, they help to streamline processes, address issues as they arise, and facilitate communication among team members, all of which contribute to better resource management and cost control.

In contrast, other options like marketing, recruitment, and sales support may drive business growth and customer engagement but do not specifically focus on managing overhead costs in the same operational sense. Marketing and sales support are primarily aimed at increasing revenue and attracting clients, while recruitment involves the costs associated with hiring new staff, which may not have a direct effect on managing overhead in the immediate term. Hence, supervisory assistance stands out in its potential to optimize operations and manage costs effectively.