Well, by "under the table" I mean that those workers are unknown to the government, so I don't think there is a way to know for sure. The government's estimates

Well, by "under the table" I mean that those workers are unknown to the government, so I don't think there is a way to know for sure. The government's estimates are at ~15%. From my experience, most workers in agriculture and food & beverages work under the table. It's a very complicated subject--which I can talk about if you're interested--but I don't know if you can really blame them. Taxes in Italy are almost 50%. For years I've paid 45% in taxes and 1200/yr. for my accountant. In Poland, I only pay 19% for taxes and 40/mo. for my accountant, and services to citizens and public safety are about 1000 times better than Italy. It just feels wrong to pay taxes in Italy: you don't have any money left, and whenever you need something from the government it's a nightmare and done so badly that you feel you're in a third-world country.