Many States in the Arabian Peninsula use their muslim brothers from Bangladesh on 3-year rolling contracts with a six month break to return to their families. Many of these men are married. This tears them away from their children & their wives. Given the stipulations in the Hadith about sexual abstinence, the claims of wives have on their husbands, that husbands have on their wives, is this practice not Haram?
If it is, then it is not Haram practice by simply the contracting companies, but also by both States; as it requires the collaboration of the both States for these schemes to become a practical reality. (I'm talking about both the Bangladeshi State & Arabian State. But of course Bangladesh is in a weaker position here).
Unfortunately, I do not read Arabic; nor Bengali well enough to know whether there has been a debate on this issue in either the Islamic States in question, nor in Bangladesh. The English press, in Bangladesh seems to have been silent on this issue. But then again, this may be due to my ignorance, I don't spend a great deal of time there, nor do the people I know there tend to be highly literate.
Basically, the question hinges on what counts as human trafficking in Shariah, and what is legitimate.
(Of course, there is the practice of these Work Visas being bought & sold at the rural level at $3500, when the per-capita income of Bangladesh is $850; and at the rural level its much less. I do know that the Malaysian Government is trying to do something about this, if not the Arabian States, but I'd like to bring that up in a separate question, but I'm not sure its legitimate here).