Diminishing Returns
BeginnerDiminishing returns is the principle that, when more of one input is added to production while other inputs stay fixed, the extra output from each additional unit of that input eventually becomes smaller.
The law of diminishing returns, also called diminishing marginal returns, is a basic principle of economics. At first, adding more of an input may increase output significantly, but beyond a point, each extra unit contributes less.
For example, a small café with two coffee machines might hire extra staff. The first few workers greatly increase the number of customers served. But if it keeps hiring without adding machines or space, workers start getting in each other’s way, and each additional worker adds less and less output.
Diminishing returns explains why businesses must balance their inputs, why costs per unit can rise when production is pushed beyond capacity and why farm yields do not rise endlessly with more fertiliser.
It applies in the short run, when some inputs are fixed. In the long run, businesses can expand all inputs together, which may lead to economies of scale. Diminishing returns is also seen in personal life, such as studying for many hours without breaks, and in investing, where additional diversification adds less and less benefit.
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