Nice to know that's not free labor.

Here instead it's even forbidden by law to pay interns because theoretically should teach them (be a cost to the company) and they shouldn't actually work, just watch and do basic stuff. But what actually happens is they get free slaves, for example they sent a poor student to do the job of a skilled metalworker and die in a work accident https://www.fanpage.it/attualita/chi-era-lorenzo-parelli-il-18enne-morto-nel-suo-ultimo-giorno-di-stage-gratuito-a-udine/

When it was my turn to be the intern, the company lied about what they were doing, they said that they would do something related to my study field instead they were a moving company with a ratio of 2 interns per 1 minimum wage workers (we don't have a minimum wage in my country, I mean paid the minimum agreed by the unions). I just walked out and didn't show up to the "internship" anymore but I should have reported that. I was too naive