The famous author known for their critique of industrial society is Upton Sinclair, particularly noted for his novel The Jungle, published in 1906. Sinclair's work exposed the harsh realities of the meatpacking industry in Chicago, highlighting the exploitation of workers, unsanitary conditions, and the moral disregard of capitalism. His vivid depictions prompted public outrage and led to significant reforms, including the passage of the Pure Food and Drug Act and the Meat Inspection Act. Sinclair's writings are significant for their engagement with social issues and advocacy for workers' rights, illustrating the struggles of the early 20th century.