Jean de Sismondi

Jean Charles Léonard de Sismondi (also known as Jean Charles Leonard Simonde de Sismondi) (; 9 May 1773 – 25 June 1842), was a Swiss historian and political economist.
Works.
Sismondi is best known for his works on French and Italian history, and his economic ideas. His goals were to promote unemployment insurance, sickness benefits, a progressive tax, regulation of working hours, and a pension scheme. He was also the first to use the term "proletariat" to describe the working class created under capitalism.