"Most of these day workers are financially desperate. It's easy to get someone to do what you want when they are desperate, especially when you have a bit of cash.
Therefore, I would not attempt to hire one of these guys for fun in bed. It just doesnt seem right to me."
Utopia, you obviously haven't been reading the Rio threads where this is frequently discussed. (Someone even commented that you need to talk to the boy as if he was your servant because Rio is a class-oriented society!)
Nonetheless, the fact that one is economically deprived and sexually gifted presents opportunites for both him and his admirer. If there is no force or coercion involved, I see nothing wrong with hiring the person for specialized day labor. The person without the money has every right to make a willing decision on how to advance his fortunes. Just treat him respectfully.