S4 Ep26: Whatever happened to the 15-hour work week?

Episode Summary

Executive Summary: The episode revisits Keynes’s famous prediction of a 15-hour workweek and argues it was less wrong than it seems once retirement and lifetime leisure are included. Nicholas Crafts explains that while weekly hours haven’t fallen nearly as much as Keynes imagined, rising life expectancy, retirement, and higher lifetime wealth mean total leisure has risen substantially—though not enough to fully match Keynes’s vision.

Main Topics: Keynes’s original prediction (Priority: 5/5): The discussion opens with Keynes’s 1930 lecture forecasting that future generations would work far less, with the expectation that material needs would be largely met and leisure would become the central challenge. Why the workweek prediction looks wrong (Priority: 5/5): Crafts explains that if Keynes is taken literally as predicting a drop to 15 hours per week, modern working hours are far above that, so the prediction appears badly off when judged only by weekly labor time. Lifetime leisure and retirement (Priority: 5/5): The key reinterpretation is that leisure should be measured across a lifetime, not just in weekly hours. Longer life expectancy and more years in retirement mean total leisure has increased much more than the workweek comparison suggests. Economic growth and living standards (Priority: 4/5): Keynes correctly anticipated large gains in productivity and income per person, with UK living standards rising several-fold since 1930 and broadly matching the scale of his long-run growth expectations. Why people still work more than Keynes expected (Priority: 5/5): Crafts points to several reasons: saving for longer retirements, the need to build wealth through housing and pensions, keeping up with social consumption norms, advertising, and the substitution effect from higher wages. Technology, flexibility, and the future of work (Priority: 4/5): AI, robotics, COVID-era changes, and possible policy shifts such as universal basic income could still reduce work time, but Crafts doubts a rapid move to a broad 15-hour week or a large UBI. Personal choices and meaningful work (Priority: 3/5): The interview closes on the idea that many people also work because they enjoy it or find purpose in it, not only because they must, and the guest notes he himself has restructured rather than reduced his work after retirement.

Key Arguments: Keynes’s 15-hour week should be read less as a precise forecast and more as a long-term thought experiment about a future with abundant material goods and much more leisure. Judged only by weekly work hours, Keynes missed badly; modern workers still average around 32-35 hours per week, not 15. Judged over a lifetime, Keynes was closer to the mark because retirement years have expanded dramatically as life expectancy rose. Longer retirement requires more saving, which helps explain why people do not drastically reduce prime-age work hours. Higher wages raise the opportunity cost of leisure, so as incomes grow, the substitution effect can keep people working. Social comparison, new consumer goods, and advertising all increase desired consumption and encourage continued work. Technology may eventually reduce work hours, but historical patterns suggest new tasks and jobs often replace displaced ones. A large universal basic income is unlikely because the economics do not support a payment high enough to eliminate the need to work; a smaller safety-net version is more plausible.

Data Points: Keynes’s predicted workweek: 15 hours per week - The famous forecast discussed in the episode. Time horizon in Keynes’s lecture: 100 years to 2030 - Keynes looked roughly a century ahead from 1930. Projected income per person increase: 4 to 8 times - Keynes’s estimate of long-run growth in income per head. UK income per person increase by 2019: about 5.5 times - Pre-COVID comparison with Keynes’s growth expectations. Possible UK income per person increase by 2030: about 6 times - Presented as likely to sit in the middle of Keynes’s range. Life expectancy at birth in 1931: 58.7 years - Men’s life expectancy cited as relevant to retirement expectations. Life expectancy at birth now: about 79 years - Shows substantial longevity gains since Keynes’s era. Life expectancy at age 65 in 1931: 11.4 years - Used to estimate expected retirement length in the early 20th century. Life expectancy at age 65 in 2011: 18.3 years - Indicates longer retirement periods in the modern era. Expected retirement years for a 20-year-old man in 1931: 4.66 years - Crafts’s estimated lifetime retirement duration under 1931 conditions. Expected retirement years for a 20-year-old in 2011: 16.37 years - Crafts’s estimate using modern labor force participation and longevity. Increase in expected retirement years: 11 to 12 years - Approximate gain in retirement leisure over the period. Total lifetime leisure increase: about 60% - Crafts’s lifetime measure comparing 1931 to the present. Keynes’s implied leisure increase: about 48% - What Keynes’s original framing suggests over the period. Average annual work time in recent past: 1650 hours per year - Equivalent to roughly 32 hours per week. Average holiday taken in Britain: 5.8 weeks per year - Used to adjust weekly work hours when actually working. Adjusted working-time estimate: about 35 hours per week - Working hours excluding holiday time.

Pivotal Quotes: "For the first time since his creation, man will be faced with his real, his permanent problem, how to use his freedom from pressing economic cares" — John Maynard Keynes: Opening quotation from Economic Possibilities for Our Grandchildren, framing the leisure-centered future Keynes imagined. "I don't think, incidentally, we should really see 15 hours as a prediction. It's more Keynes musing on the idea that we won't need to work very much unless we really, really want to." — Nick Crafts: Crafts reinterprets Keynes as speculative rather than strictly predictive. "If you think about even very basic economics, I think Keynes is focusing on what we might call in simple micro-terms the income effect. But actually, there's a substitution effect." — Nick Crafts: Explains why higher wages may not translate into much less work.

Implications: Keynes’s future of abundant leisure has partly arrived through longer lives and retirement, but not through a radically shorter workweek. More flexibility, automation, and policy changes could still shift hours downward, yet saving needs, preferences, and incentives will likely keep most people working more than 15 hours.