What is the major reason the market demand curve for labour slopes downward?

Question

Quizplus · Accepted Answer

The major reason the market demand curve for labour slopes downward is due to the law of diminishing marginal product, which states that as more units of a variable input (like labour) are added to fixed amounts of other inputs, the additional output produced by each new unit of input eventually decreases. This means employers are willing to pay less for each additional unit of labor, leading to a downward-sloping demand curve.

What Is the Major Reason the Market Demand Curve for Labour