In 1908, after graduation, Pew began work at Sun Oil , a business founded by his father in 1890. When his father died in 1912, Pew became vice president at the age of 26 and his brother,
J. Howard Pew, became president of Sun Oil at the age of 30.
Marcus Hook Refinery In 1901, Joseph N. Pew Sr. purchased 82 acres in
Marcus Hook, Pennsylvania along the
Delaware River, for the Sunoco Refinery. The refinery which was prosperous immediately, was operational in early 1902. The two Pew brothers were instrumental in the expansion and success of
Sun Oil. Joseph N. Pew Jr. persuaded the company to lay gasoline pipelines from the Marcus Hook refinery to distribution points in Ohio, New York, and New Jersey and then negotiated with 1,000 landholders in four states for permission to cross their property. The
Lindenthorpe Mansion on the Delaware River waterfront became the Sunoco plant headquarters. In 1916, Pew and his brother J. Howard, who had become Sun Oil’s president in 1912, expanded into the shipbuilding business. Joseph Jr. ran the
Sun Shipbuilding & Drydock Company in
Chester, Pennsylvania, which would become the largest private shipyard and biggest producer of oil tankers in America by
World War II. As visionary of the company, it was Pew who was behind the effort to develop gasoline without
tetraethyl lead, creating Blue
Sunoco. He also developed a gyroscopic instrument with high-speed camera and timing device for preventing the drilling of crooked holes in oil wells. Receiving a patent in 1926, the device helped the company drill deeper oil wells. Known for their commitment to employees, the Pews never laid off a single Sun Oil employee during the
Great Depression and also developed one of the first stock-sharing plans for employees. Pew remained vice president of the company until being appointed chairman in 1947. He was chairman until his death in Philadelphia, PA in 1963. Pew hired his
Quill and Dagger classmate from Cornell, Samuel B. Eckert, who served as
Sun Oil treasurer and vice president. ==Political career==