The productivity converged. The time didn't.
The rich world shortened the working year for 150 years, then the US stopped and Europe didn't. Americans now work 454 hours a year more than Germans — and the reason isn't what almost everyone assumes.
Start with the part nobody argues about.
In 1870 the average American worker put in around 3,100 hours a year. A German worked around 3,300. Those are reconstructions rather than measurements, so treat them as approximate — but the direction is not in doubt, and neither is the scale.
By 2023 the American figure is 1,789 and the German 1,335. Falls of roughly 42% and 59%. A century and a half of machinery, electricity, unions, weekends and law, and the working year came down by more than half.
It wasn't two countries. It was everywhere.
France, the United Kingdom and Australia run the same shape — a steep, sustained, remarkably similar decline. This is one of the most robust trends in economic history, and until about 1980 you could have drawn a single line through the rich world and been broadly right.
Then the lines stop agreeing.
Zoom in on the last fifty years and the divergence is hard to miss.
Since 1980 the United States has shed 52 hours a year. Not 52 a year — 52 in total, across 43 years. About one hour a week. And it didn't even fall steadily: American hours *rose* from 1,840 in 1980 to 1,888 in 2000 before drifting back down.
Over the same period Germany shed 421 hours and France 289. The American working year effectively stopped shortening around 1980. The continental European one did not.
It has not always run this way, and that is the part that surprises people.
In 1950 Germans worked 405 hours a year **more** than Americans. The lines crossed in 1973. By 2023 Germans work 454 hours **fewer** — a swing of about 860 hours inside one working lifetime.
Four hundred and fifty-four hours is roughly eleven forty-hour weeks. Put crudely: the American works about eleven extra weeks a year.
One caveat before anyone runs with that, and it matters. These are hours per *worker*, not per full-time worker. A country can lower its average by having more people work part-time without anybody's week getting shorter — and part-time shares differ a lot between these countries. Some of this gap is that, and we could not measure how much.
So here is the obvious explanation, and it is the one almost everyone reaches for: Europe chose leisure. Americans work harder, produce more, and earn more. Europeans take August off and accept being poorer for it. A preference, freely made, with a price attached.
Now put the second dataset on the chart.
This is output per hour worked — GDP divided by hours, adjusted for inflation and price levels. In 1950 a German hour produced about a quarter of what an American hour did. By 1980, two-thirds. It passed 95% in 1994.
In 2023: **$82.50 against $83.53.**
That is a gap of 1.2%, which in a purchasing-power comparison means indistinguishable. Not close. The same.
Hold both lines in view, because the argument is what they do to each other.
Hours diverge from parity in the early 1970s out to a 454-hour gap. Output per hour converges from four-to-one down to level. One measure separates while the other closes.
Multiply them and a 2023 American worker produces roughly $149,000 a year against a German's $110,000 — Germany at about 74%. Per hour, Germany is at 99%.
Essentially the entire income-per-worker gap between the United States and Germany is the length of the working year. Not skill, not capital, not effort per hour. Schedule.
Two reputations don't survive the chart either.
Japan gave the world the word *karoshi* — death from overwork. Japan has worked fewer hours per worker than the United States every year since 1998, and is 135 hours below it now.
South Korea is still the long-hours case at 1,910 hours. It is also the biggest reduction in the entire dataset: down 37% from a 1969 peak of 3,040. The country most associated with punishing hours has cut them harder than anyone.
The folk map of who works hard is roughly half a century out of date.
Keynes guessed in 1930 that his grandchildren would work fifteen-hour weeks. He was wrong, and the failure is usually told as a story about human insatiability — we got richer and just bought more stuff instead of more time.
The data says that is a description of one country, not of the species. Both places got the productivity growth. One converted it into income and the other converted a large share of it into time, and by 2023 they produce the same amount per hour while one of them works eleven weeks longer.
What this chart cannot tell you is why. Working-time law, union density, vacation mandates, tax design, industry mix — all plausible, none of them in this data. Anyone who tells you which one it was is going beyond what these two series can support.
What the series do support is narrower and more useful: the gap is not a productivity gap. It is a choice about what to do with productivity — and the two countries made different ones.