Question 1

What is marginal product of labor and how is it calculated?

Accepted Answer

Marginal product of labor (MPL) measures the additional output produced by adding one more worker while keeping capital constant. It is calculated by finding the change in total product from adding labor. For example, if one baker produces 30 loaves daily and two bakers produce 75 loaves, the MPL of the second baker is 45 loaves per day.

Question 2

Why does marginal product initially increase when adding more workers?

Accepted Answer

In the first stage of production, marginal product increases because additional workers enable specialization in specific tasks. When workers can focus on particular roles, individual productivity rises. For instance, the second baker in a bakery increases output by 45 loaves daily, demonstrating how labor specialization boosts the marginal product of each new worker.

Question 3

What causes marginal product to decline in the second stage of production?

Accepted Answer

Marginal product declines when additional workers have less access to fixed capital resources. As more labor is added, each worker spends more time waiting to use equipment like ovens, reducing individual productivity. For example, a third baker may increase output by only 30 loaves daily instead of 45, reflecting diminishing marginal returns as capital becomes a bottleneck.

Question 4

How does negative marginal product affect total production?

Accepted Answer

Negative marginal product occurs when adding more workers actually decreases total output. Overcrowding in the workplace increases mistakes and accidents, reducing overall production. This third stage represents inefficient resource use where additional labor creates congestion rather than contributing productively to the bakery's output.

Question 5

What are the three stages of production based on marginal product?

Accepted Answer

Production progresses through three stages determined by marginal product behavior. The first stage features increasing marginal returns where each new worker adds more output than the previous one. The second stage shows diminishing marginal returns where output increases but at a declining rate. The third stage exhibits negative marginal returns where additional workers reduce total output.

Question 6

Why is understanding the rate of marginal product change important for producers?

Accepted Answer

Understanding how marginal product changes helps producers identify the most efficient production level. Knowing when marginal product peaks and begins declining allows businesses to optimize labor hiring decisions. Producers can avoid the third stage where additional workers reduce output, ensuring resources are allocated efficiently and profitably.

Question 7

How does fixed capital affect marginal product in the short run?

Accepted Answer

In the short run, capital such as ovens remains fixed while labor varies. This fixed capital constraint drives the three production stages. Initially, more workers improve capital utilization through specialization, but eventually, workers compete for limited equipment access, causing marginal product to diminish and eventually become negative.

マージナルプロダクトII