Should a manager hire another worker if the new person causes diminishing returns?

A manager should carefully consider hiring another worker if it leads to diminishing returns. While additional personnel can initially boost productivity, if their contribution becomes less effective over time, it may not justify the increased costs. It's essential to evaluate the overall impact on team dynamics, efficiency, and the specific tasks at hand before making a hiring decision. If the new hire hinders productivity rather than enhances it, it might be better to optimize existing resources instead.