Even the ones who work, do as second job black market and trading/but black market. I know that from first hand, because some of my relatives live in Germany. They are legally there and work, but some of the relatives and friends of my aunt in law get forbidden entrance to Germany, then I dont know how but they always come back, and they do transportation, like transport stuff from germany to serbia and vice versa, and they make money with it. I think it is not straight up terrible crime like killing or robbing someone, but it is illegal and black market. And they are well connected for example, when gypsies started moving to Germany as fake assylym seekers, they all of a sudden most of them went away, because they wrote eatch other text sms and such what they need to do and organised transport etc. Well most gypsies were deported from germany.