Final answer:
Growing wealth in core nations has led to income growth, increased productivity, and higher wages for workers. However, the effects of increased trade and competition are not evenly distributed, resulting in poor working conditions and lower wages for workers in low-income countries and concerns about job security for workers in high-income countries.
Step-by-step explanation:
The growing wealth in core nations has affected their workers in several ways. One major effect is the shift of labor from agriculture to more productive sectors like manufacturing, which has led to income growth in wealthy countries. This shift has also helped to raise the productivity of workers and increase the average level of wages.
However, the benefits and costs of increased trade and competition are not evenly distributed. Workers in low-income countries often labor under poor working conditions and are paid less than the minimum wage in high-income countries. This creates an imbalance in the global labor market.
In high-income countries, workers may perceive a competitive threat from firms in medium-income countries that pay lower wages due to lower costs of living. This can lead to concerns about job security and wage stagnation for workers in high-income countries.