Productivity: The Long-Run Growth Engine of the Economy

Key Takeaways

1. 1Productivity is output per unit of input, typically measured as output per worker (labor productivity) or total output per unit of capital and labor (total factor productivity)
2. 2Long-run growth depends almost entirely on productivity growth, not on credit expansion or debt accumulation
3. 3Sources of productivity growth include: education and skill accumulation, technological innovation, capital deepening (more tools per worker), better management and organization, and institutional improvements
4. 4The productivity slowdown in developed nations since 2000 is one of the most important economic challenges, potentially explaining stagnant wages despite aggregate growth
5. 5Measuring productivity is complex because the economy produces increasingly intangible goods (services, software, entertainment) that are harder to measure than tangible goods
6. 6Productivity growth varies dramatically across nations, sectors, and time periods, creating sustained differences in living standards
7. 7Without productivity growth, debt-based growth is unsustainable—higher consumption today eventually requires austerity, default, or inflation