It is often suggested that an agricultural revolution, currently defined as a rise in the output of arable workers, was a necessary precursor to industrialization and improved living standards. This article provides the first direct measurement of arable workers' average labor productivity for pre-industrial England. Rates are assessed for those production conditions that it is thought resulted in the lowest agrarian labor productivity rates in the pre-industrial period: c.1300–1348. The rates for English workers before the Black Death either surpassed or met the literature's best estimates for English workers until 1800, well after industrialization was underway.