The study concerns the following issues: 1) basic definitions (traditional craftsmanship and commercial work, self-employment, freelance jobs, learned professions, etc.); 2) analysis of the sources on, and the organizations representing the workers of the self-employment compound; 3) medium-to-long term analysis of the main components of the self-employment compound and of the occupation in self-employment companies. We examined various statistical sources on self-employment in Italy, a category including about 5.5 million workers, according to official estimates. We examined the yearly data of the time span from 2009 to 2019, with a concept about 2020, the Covid-19 year. In the examined period, we highlighted a dramatic reduction at employ...