It is the duty of the foreign governments and embassies to protect the welfare of their overseas workers, especially those who are more vulnerable to various abuses . I.E. maids , labourers.
Low income workers constitute the highest percentage of overseas income to their respective governments and countries , therefore it is actually in the interests of said governments to protect their overseas workers .
However, as I said , "the problem needs to be tackled at the root cause".
In the case of the S.Lankan Govt , which has been described in the foreign press as a "KLEPTOCRACY", because newspapers there are forbidden to say anything remotely negative about the said Govt. It is very much in their interest to have as many overseas workers as possible to provide the funds for the country and their own personal interests.
Therefore I regret to suggest that in the case of the S.Lankan Govt at least , they may actually be one of the worst offenders of unscrupulous agencies providing overseas workers .
I hope I have not offended any S.Lankan nationals with my abstracted view on this matter.