Paul Krugman on Productivity
TL;DR
Paul Krugman strongly asserts that productivity, or output per worker, is the primary long-run determinant of a country's standard of living.
Key Points
He has previously stated that a country's ability to raise its output per worker almost entirely determines its ability to improve living standards over time.
Krugman has expressed skepticism about pronouncements regarding a general European productivity lag, suggesting the gap is mostly accounted for by U.S. growth in the tech sector.
He explored in 2024 how technological progress concentrated in one sector, like US tech, may not translate to higher living standards if competition passes productivity gains through lower prices to consumers in both countries.
Summary
Paul Krugman frequently emphasizes that productivity, defined as real output per worker, is central to long-run improvements in a nation's standard of living. He famously stated that while productivity is not strictly everything, in the long run, it is almost everything because a country's ability to raise living standards depends almost entirely on this metric. He notes that economic growth largely tracks the "Solow residual," which is the portion of output growth unexplained by inputs like labor hours or capital investment, a factor whose determinants remain a significant mystery to economists.
He has recently engaged in discussions questioning the interpretation of productivity statistics, particularly concerning the perceived productivity lag in Europe compared to the United States. Krugman suggests that much of the US lead is concentrated in the tech sector, and the translation of this high tech productivity growth into significantly higher American living standards is contingent on market competition and the diffusion of lower prices. Furthermore, he cautions that productivity measurements themselves, especially for the rapidly changing tech sector, can be soft and open to dispute.
Frequently Asked Questions
Paul Krugman views productivity as the most critical long-run factor for economic prosperity. He asserts that a nation's sustained ability to improve its standard of living is almost entirely dependent on its capacity to raise output per worker.
While he views productivity as crucial for long-run growth, Paul Krugman has recently questioned the current statistics. He pointed out that productivity gains concentrated in a single sector, like U.S. tech, may not translate into significant comparative wealth gains if competition is low.
He has discussed the conventional wisdom suggesting Europe lags behind the U.S. in productivity growth since the late 1990s. Krugman argued that this apparent gap is largely confined to the tech sector and that the underlying productivity data are less reliable than commonly assumed.
Sources6
Productivity: “it is almost everything” (Chapter 1)
Productivity for prosperity: 'In the long run, it is almost everything'
Europe’s Tech Lag: Does It Matter?
Interview with Paul Krugman: Economic Geography and Mysteries of Productivity
Productivity is pretty much everything — Adam Smith Institute
Productivity statistics, Paul Krugman, and Hicks's "shadows on the face of history"
* This is not an exhaustive list of sources.