Japan is ageing faster than any country in history, with vast consequences for its economy and

[pampango]

society.

http://www.economist.com/node/17492860

Japan is heading into a demographic vortex. It is the fastest-ageing society on Earth and the first big country in history to have started shrinking rapidly from natural causes. Its median age (44) and life expectancy (83) are among the highest and its birth rate (1.4 per woman) is among the lowest anywhere. In the next 40 years its population, currently 127m, is expected to fall by 38m. By 2050 four out of ten Japanese will be over 65. Japan is also deeply in debt. But whereas Yubari’s fiscal problems arose from a huge public-spending splurge aimed at wooing back its young people (at one point it had an international film festival and 17 cinemas), Japan at the start of its journey into the demographic unknown already has one of the highest debt-to-GDP ratios in the world.

What matters most for Japan’s economic growth prospects is the decline in its working-age population, those aged 15-64, which has been shrinking since 1996. For about 50 years after the second world war the combination of a fast-growing labour force and the rising productivity of its famously industrious workers created a growth miracle. Within two generations the number of people of working age increased by 37m and Japan went from ruins to the world’s second-largest economy.

In the next 40 years that process will go into reverse (see chart 1). The working-age population will shrink so quickly that by 2050 it will be smaller than it was in 1950. Unless Japan’s productivity rises faster than its workforce declines, which seems unlikely, its economy will shrink. This year it was overtaken by China in size.



This will make Japan a test case of how big countries across the world should handle ageing and population decline. Western Europe’s working-age population is already shrinking, though not as fast as Japan’s. East Asia, too, will watch Japan intently. Its industrial-growth model has closely resembled Japan’s in its post-war boom, rising on the same tide of an expanding workforce and export-led productivity gains. Japan has been called the lead goose in that V-formation. For now, as Florian Coulmas, a population expert at Tokyo’s German Institute for Japanese Studies, puts it, Japan is “the oldest goose”. But South Korea’s and China’s working-age populations too will soon start to shrink.

[DavidDvorkin]

1. Either every country will eventually follow the same trajectory

or else the population explosion will make the world unlivable.

The world can't afford to depend on a constant supply of young workers. Automation of industry may be the only answer, and that means either a vast, poverty-stricken underclass or free distribution of food and other necessities.

[pampango]

2. Agreed. Japan will be an interesting test case in how to manage the economics of the transition

to a declining population.