It might very well be actual slavery. The "recruiters" are probably not employees of the company that commissions the labor, instead they are selling these men

It might very well be actual slavery. The "recruiters" are probably not employees of the company that commissions the labor, instead they are selling these men to companies who then "rent" them out. This comes very close to a proprietary relationship, and it's even partly supported by the legal system which helps to keep the workers/slaves in their miserable "employment" relationship.