Under what circumstances will immigration be most likely to equalize wage rates across countries?

Question

Quizplus · Accepted Answer

If immigration is costless and unimpeded, meaning that anyone can freely move between countries to work and live, wage rates are likely to be equalized across countries. This is because workers will move to countries with higher wages, which will increase the supply of labor, lower wages, and decrease the demand for labor in those countries. Similarly, the increased demand for labor in countries with lower wages will increase wages, thus equalizing wage rates across countries. In contrast, strict immigration laws and limitations on information about job opportunities may restrict the flow of migrant workers and reduce the potential for wage equalization. Additionally, high skill transferability may lead to migration of higher-skilled workers, but may not necessarily lead to wage equalization.

Under What Circumstances Will Immigration Be Most Likely to Equalize