What expression is used to describe the issue of too many workers in a company causing inefficiency?

The expression that accurately describes the issue of too many workers leading to inefficiency is "Too many cooks spoil the soup." This proverb implies that when too many people are involved in managing or overseeing a particular task or project, it can lead to confusion, miscommunication, and ultimately a suboptimal outcome. In the context of a workplace, if there are excessive workers contributing to a single task, their overlapping responsibilities and varied approaches can hinder productivity rather than enhance it.

The other options address different themes and do not pertain specifically to the idea of workforce inefficiency caused by overstaffing. For example, "A bird in the hand is worth two in the bush" focuses on the value of a current possession as opposed to uncertain future gains. "Don’t put all your eggs in one basket" addresses the risks of concentrating resources in one area without diversification. Lastly, "Actions speak louder than words" emphasizes the importance of actions over promises or statements, rather than discussing workforce dynamics.