I live in Ecuador, so not a Coloumbia expert, but I have insight on this. In short, many latin countries do not have a very well developed legal system, so there probably just isn't any law on this. I don't think there is in EC at least, and prostitution is legal here anyway. Also, it is very common in latin america to hire people as contractors, which removes essentially all employment regulations. Every US company I've ever heard of that hires here exploits this fact. They all just give you money per month as a "contractor" and you get no benefits, health insurance, etc. Its okay though, more than a few of us are running the scam backwards and have multiple front people with all the right pronouns or whatever they want acting like junior developers, when really there is just one senior guy behind the lot. Exploitation goes both ways:)