At the same time, barriers against unskilled workers have been strengthened. The ability to use skills also varies and can constitute a cost to the migrant and the economy, If the migrants had unskilled jobs while working abroad, they will have little experience that will contribute to the development of their home country upon return. Additionally, even if the worker learned new technical or industrial skills, they may not be able to use them if their country of origin does not have the infrastructure or institutional framework to support them.
This has led to increased obstacles for unskilled laborers. The ability to utilize skills also varies and can represent an economic burden on both the migrant and the economy. If migrants held unskilled positions while working abroad, they would likely return with little valuable experience that could contribute to their home country's development. Moreover, even if a worker acquired new technical or industrial expertise, they may not be able to apply it if their native country lacks the necessary infrastructure or institutional framework.