In All in the Day's Work: An Autobiography, pioneering journalist and muckraker Ida M. Tarbell reflects on her remarkable life and career, detailing her journey from small-town Pennsylvania to the forefront of American journalism. Known for her groundbreaking investigative reporting on the Standard Oil Company, which exposed monopolistic practices and led to widespread public reform, Tarbell recounts her experiences with wit and candid insight. Her story traces her rise as one of the first prominent female journalists, breaking barriers in a male-dominated field and setting a new standard for investigative integrity.

The autobiography delves into her early life, academic pursuits, and the pivotal events that sparked her interest in social justice and reform. Tarbell provides an insider's perspective on the challenges and rewards of investigative reporting, sharing the meticulous research and dedication that underscored her work, particularly in her exposés on industrial giants. Her reflections also extend to her other writings, friendships with notable intellectuals, and her influence on the progressive movement of the early 20th century.